PictureThis
camera identify
Use App
tab list
Home Identify Application
English
English
繁體中文
日本語
Español
Français
Deutsch
Pусский
Português
Italiano
한국어
Nederlands
العربية
Svenska
Polskie
ภาษาไทย
Bahasa Melayu
Bahasa Indonesia
Get App
This page looks better in the app
care_about care_about
About
care_basic_guide care_basic_guide
Basic Care
care_advanced_guide care_advanced_guide
Advanced Care
care_scenes care_scenes
More About How-Tos
care_pet_and_diseases care_pet_and_diseases
Pests & Diseases
care_more_info care_more_info
More Info
care_faq care_faq
FAQ

How to Care for Korean Spruce

Korean spruce are a group of coniferous trees that are of great value to humans in many ways. The wood is used in everything from housing and frame construction to papermaking and crafting musical instruments. Most species grow in handsome, conical shapes, making them popular ornamentals. Many boreal and temperate high-altitude forests around the world are also comprised largely of korean spruce, making them tremendously ecologically important.
Water
Water
Every 1-2 weeks
Sunlight
Sunlight
Full sun
Korean spruce
Korean spruce
care_basic_guide

Basic Care Guide

Cultivation:WaterDetail

How to Water Korean spruce?

After transplanting korean spruce, water consecutively 5-7 times, once every 5-7 days. Mix a little rooting powder in the water; this will help the roots grow. During daily care, keep the soil moist but avoid leaving standing water, as this may cause the roots to rot. In general, water once every 10 days. If the leaves soften and droop, increase the watering frequency. The amount of watering can be adjusted depending on the weather conditions.
Cultivation:WaterDetail
waterreminders

Never miss a care task again!

Plant care made easier than ever with our tailor-made smart care reminder.
Cultivation:FertilizerDetail

How to Fertilize Korean spruce?

Applying enough base fertilizers before transplanting can provide nutrients to korean spruce over a long period of growth. In the first year after transplanting, the nutrition-absorption ability of the tree's roots is not very strong, so apply nitrogen and phosphorus fertilizer every 2 weeks. In the fall, apply a little potassium fertilizer to help the trunk grow thick and sturdy. After the plant matures, it's best to fertilize it in spring and summer and only fertilize 2-4 times a year. In late fall, korean spruce slowly enters dormancy, so fertilizing should be reduced and stopped by the end of fall.
Organic fertilizer is the best choice for this slow-growing tree variety. It contains a full set of nutrients that can be utilized continually and reliably. It can also help optimize the soil texture and benefits the plants' growth. If the soil turns dry after fertilizing, water promptly.
Cultivation:FertilizerDetail
Cultivation:SunlightDetail

What Are the Sunlight Requirements for Korean spruce?

Korean spruce is shade-tolerant, so it doesn't need much direct sunlight to grow. From spring through early summer, it's best to expose the tree to light for a duration of over 6 hours a day, but a lack of light for a short time won't affect its growth. In summer, when sunlight is harsh, it's best to shade small trees grown outdoors to protect them from long-term, blazing light. If they are potted indoors, move them to a cool, shaded place.
Cultivation:SunlightDetail
lightmeter

Know the light your plants really get.

Find the best spots for them to optimize their health, simply using your phone.
Cultivation:PruningDetail

How to Prune Korean spruce?

Korean spruce has lush terminal buds. The tree usually takes on a beautiful triangular shape and does not require pruning in general. When overly pruned, its incisions secrete rosin excessively which affects the tree's normal growth. It's best to trim off overly dense, diseased, and dried branches during the plant's winter dormancy. Prune and beautify the treetop in early spring when buds sprout. About 1/2 of the young branches can be pruned off to create your desired shape. For large, mature trees, it's a good idea to prune off all the branches on the lower trunk to reduce nutrition consumption.
When growing korean spruce for Christmas decorations, you need to control height and width. Prune the treetop and lateral branches appropriately short and continue to cut the newly-grown buds short, as well. Repeat this process many times. Seal pruning incisions with wax or duct tape to keep rosin from effusing.
Cultivation:PruningDetail
close
care_advanced_guide

Advanced Care Guide

Cultivation:WaterAndHardinessDetail

What is the Ideal Temperature Range for Korean spruce?

Korean spruce likes cool and moist climates. The ideal temperature range for tree growth is 4 to 18 ℃. It's hardy and tolerant of temperatures as low as -30 ℃, but young trees and tender branches are less cold-resistant.
Korean spruce likes moisture, it has good adaptability and is slightly drought-enduring. During the spring and summer growing seasons, the tree prefers higher air humidity (70-80%), while in the fall and winter, lower air humidity (55-65%) can help it grow more sturdy.
Cultivation:WaterAndHardinessDetail
Cultivation:SoilDetail

What Soil is Best for Korean spruce?

Korean spruce grows well in fertile, deep, well-drained, slightly acidic soils. The best soil pH range is 5.1-7.3, making both sandy soil or slightly clay-like soil good choices. As the tree grows slowly and has a long life span, the soil layer should be about 70 cm thick. If barren, the soil can be improved by adding nutrient soil or organic manure.
Cultivation:SoilDetail
Cultivation:PropagationDetail

How to Propagate Korean spruce?

We can propagate korean spruce by cutting. It's difficult for korean spruce to grow roots, so the cutting selection is very important. Choose robust, year-old branches in the summer and cut off 10 to 20 cm from them. Dip them in a rooting solution for a while, and insert them into the soil that has been sterilized and wetted. Keep the branches 20 to 30 cm apart from one another and keep the soil moist. When they root, transplant them outdoors by the early spring of next year.
Cultivation:PropagationDetail
Cultivation:PlantingDetail

How to Plant Korean spruce?

To grow korean spruce in a yard, purchase seedlings and transplant them in early spring. Get the planting pit ready one week before transplanting; its diameter needs to be about 20 cm longer than that of the root ball and have a depth of about 15 cm deeper. It should be no less than 6 m away from other plants. Add organic fertilizers to the bottom of the planting pit before transplanting and mix them well with the soil.
Place the seedling vertically into the pit, shovel 2/3 of the soil back, and water thoroughly once to make sure the moisture around the plant's roots is sufficient. Then, fill the pit fully up with soil and water again. Stomp the soil firmly and keep the pit surface level with the ground. If it's often windy at the planting site, support the young tree with wood sticks or metal poles in case a strong gale threatens to tilt it or knock it down.
Indoor potted korean spruce can be directly purchased. The tree grows slowly and usually doesn't require repotting. Repotting is only necessary if the needles turn yellow and fall off the tree, the roots around the pot brim or at the bottom wither and dry up, or the soil in the pot compacts. Move the majority of the original soil to the new pot with the plant, and add small amounts of organic fertilizers and new soil to provide more nutrients for its growth.
Cultivation:PlantingDetail
seasonal-tip

Seasonal Precautions

A shading screen should be set up when sunlight is too harsh, as the leaf stems of young trees can get sunburnt. The base of the trunk is also vulnerable, so hay can be piled around it to prevent the soil from compacting due to rapid water evaporation. This will keep evaporation from affecting the roots' absorption of nutrients and respiration. In rainy seasons, pay extra attention to soil drainage, as waterlogging around the roots can result in various diseases.
seasonal-tip
care_scenes

More Info on Korean Spruce Growth and Care

Basic Care Guide
Lighting
Full sun
Temperature
-35 30 ℃
care_pet_and_diseases

Common Pests & Diseases

Common issues for Korean spruce based on 10 million real cases
Longhorn beetles
Longhorn beetles Longhorn beetles
Longhorn beetles
The longhorn beetle is a medium- to large-sized insect with very long antennae and strong jaws. Both its adult and larval stages gnaw on tree trunks, leaving small, round holes.
Solutions: Some longhorn beetles species are native insects, and they cause little damage. Therefore, these don't warrant control. Other longhorn beetles species are invasive pests that were recently introduced from other areas. These species can cause a great deal of damage to hardwood trees. Apply an insecticide containing imidacloprid as a soil injection or trunk injection following product instructions. This will enter into new grow and kill adults who feed on foliage. This will not help save trees that are already infested with large amounts of larvae, but it will save trees located near an infested tree. Contact an arborist for best control practices regarding infected trees. To properly control longhorn beetles, all host plants in a given area must be treated. Contact a local extension agent or state agency. Tracking the spread of longhorn beetles is a key component of their control.
Branch blight
Branch blight Branch blight
Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Solutions: Inspect trees frequently, and remove any infected branches as soon as possible. Branch blight cannot be cured, so the only treatment is to prune the tree and monitor it carefully for signs of the disease. All affected parts of the tree should be removed, since blight can survive over the winter inside the plant’s tissues. Blight can become systemic in the tree, in which case the entire plant should be removed so it does not remain a host for the pathogen and allow it to spread.
Dieback
Dieback Dieback
Dieback
There are several possible causes for dieback.
Solutions: There are a few things to try when dieback becomes apparent: Fertilize and water the plants - these two steps, along with judicious pruning, can help reduce the stress on the root system and encourage renewed vigor Have an arborist check to see if plant roots are girdling Test soil pH and adjust accordingly Remove and destroy infected twigs and branches
Fire ants
Fire ants Fire ants
Fire ants
Fire ants gnaw on the roots of plants and are aggressive toward people.
Solutions: Caution: fire ants are venomous and cause painful bites which can be fatal in the case of a rare but significant allergy. Fire ants can be a painful pest to have around for you and your plants. Keeping them under control will ensure comfortable gardening for all. For less severe cases: Physically remove mounds. Dig out and remove entire mounds (remember, they go deeper than they seem). Use citrus oil. Pour citrus oil, which is toxic to fire ants, down their holes. For severe cases: Use ant bait. For a chemical solution, broadcast insecticide bait formulated for fire ants in the area around a mound. Apply the bait during a dry evening so the ants can forage for it at night. Look for products that contain Indoxacarb. Release phorid flies. Introduce or promote beneficial phorid flies to gardens. These parasitic flies attack invasive fire ants. Hire a professional. Some ant baits are only available to professional exterminators. For serious cases of fire ants, consider hiring a professional.
autodiagnose

Treat and prevent plant diseases.

AI-powered plant doctor helps you diagnose plant problems in seconds.
close
Longhorn beetles
plant poor
Longhorn beetles
The longhorn beetle is a medium- to large-sized insect with very long antennae and strong jaws. Both its adult and larval stages gnaw on tree trunks, leaving small, round holes.
Overview
Overview
Longhorn beetles are characterized by extremely long antennae which are often as long as, or longer, than the beetle's body. Adult longhorn beetles vary in size, shape, and coloration, depending upon the species. They may be 6 to 76 mm long. The larvae are worm-like with a wrinkled, white to yellowish body and a brown head.
Longhorn beetles are active throughout the year, but adults are most active in the summer and fall. Larvae feed on wood throughout the year.
Both larvae and adults feed on woody tissue. Some of the most susceptible species include ash, birch, elm, poplar, and willow.
If left untreated, longhorn beetles can kill trees.
Symptom Analysis
Symptom Analysis
Longhorn beetles are attracted to wounded, dying, or freshly-cut hardwood trees. Adults lay their eggs in the spring, summer, and fall on the bark of greenwood. There may be sap around egg-laying sites.
Once the eggs hatch, larvae called round-headed borers burrow into the trunk to feed. They may tunnel for one to three years depending on the wood's nutritional content. As the larvae feed, they release sawdust-like frass at the base of the tree.
Eventually, the larvae turn into pupae and then adults. When the adults emerge, they leave 1 cm holes in the bark on their way out. Adults feed on leaves, bark, and shoots of trees before laying eggs.
After a few years of being fed upon by longhorn beetles, a tree will begin losing leaves. Eventually, it will die.
Solutions
Solutions
Some longhorn beetles species are native insects, and they cause little damage. Therefore, these don't warrant control.
Other longhorn beetles species are invasive pests that were recently introduced from other areas. These species can cause a great deal of damage to hardwood trees.
  • Apply an insecticide containing imidacloprid as a soil injection or trunk injection following product instructions. This will enter into new grow and kill adults who feed on foliage. This will not help save trees that are already infested with large amounts of larvae, but it will save trees located near an infested tree.
  • Contact an arborist for best control practices regarding infected trees.
  • To properly control longhorn beetles, all host plants in a given area must be treated.
  • Contact a local extension agent or state agency. Tracking the spread of longhorn beetles is a key component of their control.
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
Branch blight
plant poor
Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Overview
Overview
"Blight" is an umbrella term used to describe a category of tree diseases caused by fungus or bacteria. Branch blight occurs when fungus attacks the branches and twigs of a tree, resulting in branches slowly dying off.
Branch blight can affect most species of trees to some degree, and it may be called by different names including twig blight or stem blight. It is caused by a variety of fungi which attack branches first, especially immature growth.
Blight usually occurs in warm, humid conditions, so is most common in the spring and summer months. Because specific environmental conditions are required, the frequency of branch blight can vary from year to year. This makes the disease hard to control, as it can spread between trees and affect multiple plants in a short period of time.
In the worst-case scenario, trees can lose significant portions of their foliage and fail to produce fruit. Young or unhealthy trees could die off completely.
Symptom Analysis
Symptom Analysis
The first symptoms of branch blight are that the emerging foliage turns brown or gray at the tips, especially on the smallest branches. Brown spots cover the entire surface of the leaves, eventually causing leaves and stems to shrivel and fall off. Over time, the dying tissue will spread toward the center of the plant. If left untreated, spores from the attacking fungus may appear on dying foliage within 3-4 weeks of the infection.
In some cases, lesions may form at the spot where the twig branches off from the healthy tissue. Branches may display girdling, which is a band of damaged tissue encircling the branch. An untreated tree will eventually lose all of its foliage and die.
Disease Cause
Disease Cause
  • Pathogens on young twigs and foliage cause disease
  • Stressed and unhealthy trees are more susceptible - root injury due to physical or insect damage, infection, or aging can prevent adequate absorption of water and nutrients
  • Extremely wet conditions including sprinkler watering can attract fungus
  • Fungi can be transmitted between nearby trees
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
Dieback
plant poor
Dieback
There are several possible causes for dieback.
Overview
Overview
Dealing with dieback in plants can be tricky, in part because this is both the name of a disease itself and a common symptom of many other types of diseases. Dieback can be characterized by the progressive, gradual death of shoots, twigs, roots, and branches, generally starting first at the tips.
In many cases, dieback is caused by fungi or bacteria. These pathogens can produce cankers, wilts, stem or root rots, and even anthracnose, but the most common symptom, of course, is that various plant parts (or the entire plant) will begin to die back.
Symptom Analysis
Symptom Analysis
The symptoms of dieback can be gradual or slightly more abrupt. Usually, however, they are slow in developing and tend to be uniform among the various parts of a plant.
Some plants may have more localized symptoms, with all twigs affected or all branches affected but not the rest of the plant. Some potential symptoms include:
  • Dead or dying branches and twigs
  • Dieback that starts in the top of a plant and progresses downward (though it can start lower, especially for conifers)
  • A delayed flush of growth in the spring
  • Leaf margins become scorched
  • Pale green or yellow leaves
  • Leaves that are small or otherwise distorted
  • Early leaf drop
  • Reduced growth of twigs and stems
  • Thinning of crown foliage
  • Production of suckers on trunk and branches
  • Premature fall coloration (in tree species like birch, sweetgum, maple, oak, ash, etc)
The symptoms of dieback can occur within just one season or become worse each and every year.
Disease Cause
Disease Cause
There are several types of dieback, each of which has a different cause with which it is associated.
"dieback" as a standalone issue, including the condition known as Staghead, is caused by fungal or bacterial infections. Staghead is a slow dieback that occurs on the upper branches of a tree, named as such because the dead limbs look much like the head of a stag.
Other causes of dieback symptoms include:
  • Cankers or wilts
  • Stem or root rots
  • Nematodes
  • Stem or root boring insects
  • Pavement being placed over root systems
  • Winter injury from cold
  • Salt damage
  • Lack of moisture (or excess of moisture)
  • Lack of an essential nutrient or element
Trees and shrubs that are attacked by insects, exposed to extremely high or low temperatures, or experience severe and frequent fluctuations in soil moisture are the most likely to suffer from dieback. These stress factors alone or in combination with each other can reduce leaf and shoot growth, and progress into death of twigs and branches.
Although any of these issues can lead to dieback, the most serious consequences tend to occur when the roots of a plant are damaged. Similarly, trees and shrubs that are planted improperly or in unfavorable locations are more likely to develop this condition.
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
Fire ants
plant poor
Fire ants
Fire ants gnaw on the roots of plants and are aggressive toward people.
Overview
Overview
Fire ants are a group of ants that are known for their aggressive behavior and painful stings. Some fire ants are native and others are invasive from other countries. Once they reach plants, they climb them and chew away at leaves and flower buds.
Fire ants also kill and eat beneficial insects such as caterpillars, ladybugs, mantis, and native ants. They can be a problem any time temperatures are above freezing, but new infestations are most likely to appear when brought in via contaminated material such as potting soil or mulch, or when insecticides have harmed populations of beneficial insects that would otherwise control populations of fire ants.
They can be difficult to control, especially once populations become large. Plant damage is typically minor, but fire ants can destroy seedlings.
Symptom Analysis
Symptom Analysis
The number one symptom of fire ants is seeing the ants themselves which are red or black in color. Ant mounds in the ground are also signs. Fire ant mounds rarely exceed 46 cm in diameter. If a fire ant mound is disturbed, many fast-moving, aggressive ants will emerge. These ants will bite and then painfully sting.
Even if no ants are visible, their damage might be apparent. Chewed leaf and flower edges might indicate fire ants. Fully eaten seedlings are another sign.
Solutions
Solutions
Caution: fire ants are venomous and cause painful bites which can be fatal in the case of a rare but significant allergy.
Fire ants can be a painful pest to have around for you and your plants. Keeping them under control will ensure comfortable gardening for all.
For less severe cases:
  • Physically remove mounds. Dig out and remove entire mounds (remember, they go deeper than they seem).
  • Use citrus oil. Pour citrus oil, which is toxic to fire ants, down their holes.
For severe cases:
  • Use ant bait. For a chemical solution, broadcast insecticide bait formulated for fire ants in the area around a mound. Apply the bait during a dry evening so the ants can forage for it at night. Look for products that contain Indoxacarb.
  • Release phorid flies. Introduce or promote beneficial phorid flies to gardens. These parasitic flies attack invasive fire ants.
  • Hire a professional. Some ant baits are only available to professional exterminators. For serious cases of fire ants, consider hiring a professional.
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
qrcode
Scan the QR code with your phone camera to download the app
care_more_info

More About Korean Spruce

Plant Type
Plant Type
Tree
plantfinder

Find your perfect green friends.

Plan your green oasis based on your criteria: plant type, pet safety, skill level, sites, and more.
care_faq

Common Problems

How can I effectively prevent pests and diseases in the early stages of growing korean spruce?

more more
Korean spruce has only some resistance to pests and diseases. Therefore, the soil needs to be sterilized before planting and properly drained during rainy seasons. Take care not to over prune the tree during maintenance.

How can I prevent korean spruce from being tilted or knocked down by a gale?

more more
When newly-transplanted, the roots of the seedling have not secured a firm grip to the ground, making the tree highly likely to be tilted or blown down in a gale. Therefore, a trellis can be set up for the seedling using a few wood sticks or metal pipes or poles. Cushion the contact points between the trellis and the trunk with hay or protective cloths to prevent the trunk from being bruised by the trellis.
plant

Botanist in your pocket

plant
plant

App

plant
close
product icon
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
Your Ultimate Guide to Plants
Identify grow and nurture the better way!
product icon
17,000 local species +400,000 global species studied
product icon
Nearly 5 years of research
product icon
80+ scholars in botany and gardening
ad
ad
Botanist in your pocket
Scan the QR code with your phone camera to download the app
close
title
Botanist in your pocket
qrcode
Scan QR code to download
About
Basic Care
Advanced Care
More About How-Tos
Pests & Diseases
More Info
FAQ
Korean spruce
Korean spruce

How to Care for Korean Spruce

Korean spruce are a group of coniferous trees that are of great value to humans in many ways. The wood is used in everything from housing and frame construction to papermaking and crafting musical instruments. Most species grow in handsome, conical shapes, making them popular ornamentals. Many boreal and temperate high-altitude forests around the world are also comprised largely of korean spruce, making them tremendously ecologically important.
Water
Every 1-2 weeks
Water
Sunlight
Full sun
Sunlight Sunlight detail
care_basic_guide

Basic Care Guide

Cultivation:WaterDetail

How to Water Korean spruce?

Cultivation:WaterDetail
After transplanting korean spruce, water consecutively 5-7 times, once every 5-7 days. Mix a little rooting powder in the water; this will help the roots grow. During daily care, keep the soil moist but avoid leaving standing water, as this may cause the roots to rot. In general, water once every 10 days. If the leaves soften and droop, increase the watering frequency. The amount of watering can be adjusted depending on the weather conditions.
waterreminders

Never miss a care task again!

Plant care made easier than ever with our tailor-made smart care reminder.
Cultivation:FertilizerDetail

How to Fertilize Korean spruce?

Cultivation:FertilizerDetail
Applying enough base fertilizers before transplanting can provide nutrients to korean spruce over a long period of growth. In the first year after transplanting, the nutrition-absorption ability of the tree's roots is not very strong, so apply nitrogen and phosphorus fertilizer every 2 weeks. In the fall, apply a little potassium fertilizer to help the trunk grow thick and sturdy. After the plant matures, it's best to fertilize it in spring and summer and only fertilize 2-4 times a year. In late fall, korean spruce slowly enters dormancy, so fertilizing should be reduced and stopped by the end of fall.
Organic fertilizer is the best choice for this slow-growing tree variety. It contains a full set of nutrients that can be utilized continually and reliably. It can also help optimize the soil texture and benefits the plants' growth. If the soil turns dry after fertilizing, water promptly.
Cultivation:SunlightDetail

What Are the Sunlight Requirements for Korean spruce?

Cultivation:SunlightDetail
Korean spruce is shade-tolerant, so it doesn't need much direct sunlight to grow. From spring through early summer, it's best to expose the tree to light for a duration of over 6 hours a day, but a lack of light for a short time won't affect its growth. In summer, when sunlight is harsh, it's best to shade small trees grown outdoors to protect them from long-term, blazing light. If they are potted indoors, move them to a cool, shaded place.
lightmeter

Know the light your plants really get.

Find the best spots for them to optimize their health, simply using your phone.
Cultivation:PruningDetail

How to Prune Korean spruce?

Cultivation:PruningDetail
Korean spruce has lush terminal buds. The tree usually takes on a beautiful triangular shape and does not require pruning in general. When overly pruned, its incisions secrete rosin excessively which affects the tree's normal growth. It's best to trim off overly dense, diseased, and dried branches during the plant's winter dormancy. Prune and beautify the treetop in early spring when buds sprout. About 1/2 of the young branches can be pruned off to create your desired shape. For large, mature trees, it's a good idea to prune off all the branches on the lower trunk to reduce nutrition consumption.
When growing korean spruce for Christmas decorations, you need to control height and width. Prune the treetop and lateral branches appropriately short and continue to cut the newly-grown buds short, as well. Repeat this process many times. Seal pruning incisions with wax or duct tape to keep rosin from effusing.
close
care_advanced_guide

Advanced Care Guide

Cultivation:WaterAndHardinessDetail

What is the Ideal Temperature Range for Korean spruce?

Cultivation:WaterAndHardinessDetail
Korean spruce likes cool and moist climates. The ideal temperature range for tree growth is 4 to 18 ℃. It's hardy and tolerant of temperatures as low as -30 ℃, but young trees and tender branches are less cold-resistant.
Korean spruce likes moisture, it has good adaptability and is slightly drought-enduring. During the spring and summer growing seasons, the tree prefers higher air humidity (70-80%), while in the fall and winter, lower air humidity (55-65%) can help it grow more sturdy.
Cultivation:SoilDetail

What Soil is Best for Korean spruce?

Cultivation:SoilDetail
Korean spruce grows well in fertile, deep, well-drained, slightly acidic soils. The best soil pH range is 5.1-7.3, making both sandy soil or slightly clay-like soil good choices. As the tree grows slowly and has a long life span, the soil layer should be about 70 cm thick. If barren, the soil can be improved by adding nutrient soil or organic manure.
Cultivation:PropagationDetail

How to Propagate Korean spruce?

Cultivation:PropagationDetail
We can propagate korean spruce by cutting. It's difficult for korean spruce to grow roots, so the cutting selection is very important. Choose robust, year-old branches in the summer and cut off 10 to 20 cm from them. Dip them in a rooting solution for a while, and insert them into the soil that has been sterilized and wetted. Keep the branches 20 to 30 cm apart from one another and keep the soil moist. When they root, transplant them outdoors by the early spring of next year.
Cultivation:PlantingDetail

How to Plant Korean spruce?

Cultivation:PlantingDetail
To grow korean spruce in a yard, purchase seedlings and transplant them in early spring. Get the planting pit ready one week before transplanting; its diameter needs to be about 20 cm longer than that of the root ball and have a depth of about 15 cm deeper. It should be no less than 6 m away from other plants. Add organic fertilizers to the bottom of the planting pit before transplanting and mix them well with the soil.
Place the seedling vertically into the pit, shovel 2/3 of the soil back, and water thoroughly once to make sure the moisture around the plant's roots is sufficient. Then, fill the pit fully up with soil and water again. Stomp the soil firmly and keep the pit surface level with the ground. If it's often windy at the planting site, support the young tree with wood sticks or metal poles in case a strong gale threatens to tilt it or knock it down.
Indoor potted korean spruce can be directly purchased. The tree grows slowly and usually doesn't require repotting. Repotting is only necessary if the needles turn yellow and fall off the tree, the roots around the pot brim or at the bottom wither and dry up, or the soil in the pot compacts. Move the majority of the original soil to the new pot with the plant, and add small amounts of organic fertilizers and new soil to provide more nutrients for its growth.
seasonal-tip

Seasonal Precautions

A shading screen should be set up when sunlight is too harsh, as the leaf stems of young trees can get sunburnt. The base of the trunk is also vulnerable, so hay can be piled around it to prevent the soil from compacting due to rapid water evaporation. This will keep evaporation from affecting the roots' absorption of nutrients and respiration. In rainy seasons, pay extra attention to soil drainage, as waterlogging around the roots can result in various diseases.
care_scenes

More Info on Korean Spruce Growth and Care

Basic Care Guide
care_pet_and_diseases

Common Pests & Diseases

Common issues for Korean spruce based on 10 million real cases
Longhorn beetles
Longhorn beetles Longhorn beetles Longhorn beetles
The longhorn beetle is a medium- to large-sized insect with very long antennae and strong jaws. Both its adult and larval stages gnaw on tree trunks, leaving small, round holes.
Solutions: Some longhorn beetles species are native insects, and they cause little damage. Therefore, these don't warrant control. Other longhorn beetles species are invasive pests that were recently introduced from other areas. These species can cause a great deal of damage to hardwood trees. Apply an insecticide containing imidacloprid as a soil injection or trunk injection following product instructions. This will enter into new grow and kill adults who feed on foliage. This will not help save trees that are already infested with large amounts of larvae, but it will save trees located near an infested tree. Contact an arborist for best control practices regarding infected trees. To properly control longhorn beetles, all host plants in a given area must be treated. Contact a local extension agent or state agency. Tracking the spread of longhorn beetles is a key component of their control.
Learn More About the Longhorn beetles more
Branch blight
Branch blight Branch blight Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Solutions: Inspect trees frequently, and remove any infected branches as soon as possible. Branch blight cannot be cured, so the only treatment is to prune the tree and monitor it carefully for signs of the disease. All affected parts of the tree should be removed, since blight can survive over the winter inside the plant’s tissues. Blight can become systemic in the tree, in which case the entire plant should be removed so it does not remain a host for the pathogen and allow it to spread.
Learn More About the Branch blight more
Dieback
Dieback Dieback Dieback
There are several possible causes for dieback.
Solutions: There are a few things to try when dieback becomes apparent: Fertilize and water the plants - these two steps, along with judicious pruning, can help reduce the stress on the root system and encourage renewed vigor Have an arborist check to see if plant roots are girdling Test soil pH and adjust accordingly Remove and destroy infected twigs and branches
Learn More About the Dieback more
Fire ants
Fire ants Fire ants Fire ants
Fire ants gnaw on the roots of plants and are aggressive toward people.
Solutions: Caution: fire ants are venomous and cause painful bites which can be fatal in the case of a rare but significant allergy. Fire ants can be a painful pest to have around for you and your plants. Keeping them under control will ensure comfortable gardening for all. For less severe cases: Physically remove mounds. Dig out and remove entire mounds (remember, they go deeper than they seem). Use citrus oil. Pour citrus oil, which is toxic to fire ants, down their holes. For severe cases: Use ant bait. For a chemical solution, broadcast insecticide bait formulated for fire ants in the area around a mound. Apply the bait during a dry evening so the ants can forage for it at night. Look for products that contain Indoxacarb. Release phorid flies. Introduce or promote beneficial phorid flies to gardens. These parasitic flies attack invasive fire ants. Hire a professional. Some ant baits are only available to professional exterminators. For serious cases of fire ants, consider hiring a professional.
Learn More About the Fire ants more
autodiagnose

Treat and prevent plant diseases.

AI-powered plant doctor helps you diagnose plant problems in seconds.
close
Longhorn beetles
plant poor
Longhorn beetles
The longhorn beetle is a medium- to large-sized insect with very long antennae and strong jaws. Both its adult and larval stages gnaw on tree trunks, leaving small, round holes.
Overview
Overview
Longhorn beetles are characterized by extremely long antennae which are often as long as, or longer, than the beetle's body. Adult longhorn beetles vary in size, shape, and coloration, depending upon the species. They may be 6 to 76 mm long. The larvae are worm-like with a wrinkled, white to yellowish body and a brown head.
Longhorn beetles are active throughout the year, but adults are most active in the summer and fall. Larvae feed on wood throughout the year.
Both larvae and adults feed on woody tissue. Some of the most susceptible species include ash, birch, elm, poplar, and willow.
If left untreated, longhorn beetles can kill trees.
Symptom Analysis
Symptom Analysis
Longhorn beetles are attracted to wounded, dying, or freshly-cut hardwood trees. Adults lay their eggs in the spring, summer, and fall on the bark of greenwood. There may be sap around egg-laying sites.
Once the eggs hatch, larvae called round-headed borers burrow into the trunk to feed. They may tunnel for one to three years depending on the wood's nutritional content. As the larvae feed, they release sawdust-like frass at the base of the tree.
Eventually, the larvae turn into pupae and then adults. When the adults emerge, they leave 1 cm holes in the bark on their way out. Adults feed on leaves, bark, and shoots of trees before laying eggs.
After a few years of being fed upon by longhorn beetles, a tree will begin losing leaves. Eventually, it will die.
Solutions
Solutions
Some longhorn beetles species are native insects, and they cause little damage. Therefore, these don't warrant control.
Other longhorn beetles species are invasive pests that were recently introduced from other areas. These species can cause a great deal of damage to hardwood trees.
  • Apply an insecticide containing imidacloprid as a soil injection or trunk injection following product instructions. This will enter into new grow and kill adults who feed on foliage. This will not help save trees that are already infested with large amounts of larvae, but it will save trees located near an infested tree.
  • Contact an arborist for best control practices regarding infected trees.
  • To properly control longhorn beetles, all host plants in a given area must be treated.
  • Contact a local extension agent or state agency. Tracking the spread of longhorn beetles is a key component of their control.
Prevention
Prevention
  • Keeping trees healthy, uninjured, and unstressed will help prevent beetle infestation. Water trees appropriately, giving neither too much nor too little.
  • Check with local tree companies about which tree species have fewer problems.
  • Avoid moving firewood as this can introduce exotic longhorn beetles.
  • Routine spraying of persistent, broad-spectrum insecticides will help prevent re-infestation of previously affected trees or infestation of unaffected trees.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
close
Branch blight
plant poor
Branch blight
Branch blight can cause lignified branches to dry up entirely and die.
Overview
Overview
"Blight" is an umbrella term used to describe a category of tree diseases caused by fungus or bacteria. Branch blight occurs when fungus attacks the branches and twigs of a tree, resulting in branches slowly dying off.
Branch blight can affect most species of trees to some degree, and it may be called by different names including twig blight or stem blight. It is caused by a variety of fungi which attack branches first, especially immature growth.
Blight usually occurs in warm, humid conditions, so is most common in the spring and summer months. Because specific environmental conditions are required, the frequency of branch blight can vary from year to year. This makes the disease hard to control, as it can spread between trees and affect multiple plants in a short period of time.
In the worst-case scenario, trees can lose significant portions of their foliage and fail to produce fruit. Young or unhealthy trees could die off completely.
Symptom Analysis
Symptom Analysis
The first symptoms of branch blight are that the emerging foliage turns brown or gray at the tips, especially on the smallest branches. Brown spots cover the entire surface of the leaves, eventually causing leaves and stems to shrivel and fall off. Over time, the dying tissue will spread toward the center of the plant. If left untreated, spores from the attacking fungus may appear on dying foliage within 3-4 weeks of the infection.
In some cases, lesions may form at the spot where the twig branches off from the healthy tissue. Branches may display girdling, which is a band of damaged tissue encircling the branch. An untreated tree will eventually lose all of its foliage and die.
Disease Cause
Disease Cause
  • Pathogens on young twigs and foliage cause disease
  • Stressed and unhealthy trees are more susceptible - root injury due to physical or insect damage, infection, or aging can prevent adequate absorption of water and nutrients
  • Extremely wet conditions including sprinkler watering can attract fungus
  • Fungi can be transmitted between nearby trees
Solutions
Solutions
  • Inspect trees frequently, and remove any infected branches as soon as possible. Branch blight cannot be cured, so the only treatment is to prune the tree and monitor it carefully for signs of the disease.
  • All affected parts of the tree should be removed, since blight can survive over the winter inside the plant’s tissues.
  • Blight can become systemic in the tree, in which case the entire plant should be removed so it does not remain a host for the pathogen and allow it to spread.
Prevention
Prevention
  • Avoid purchasing trees with dead or dying growth.
  • Sterilize cutting tools frequently when pruning to avoid spreading fungus between plants.
  • Keep trees mulched and watered, especially during dry periods, to prevent stress.
  • Avoid splashing water on the leaves when watering, as wet foliage is attractive to fungi and bacteria.
  • When planting, allow enough room between trees that there will be sufficient air circulation for them to dry out. Crowding trees too close together can increase humidity and allow the fungi to transfer.
  • When conditions are wet and humid, a fungicide can be used on new growth.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
close
Dieback
plant poor
Dieback
There are several possible causes for dieback.
Overview
Overview
Dealing with dieback in plants can be tricky, in part because this is both the name of a disease itself and a common symptom of many other types of diseases. Dieback can be characterized by the progressive, gradual death of shoots, twigs, roots, and branches, generally starting first at the tips.
In many cases, dieback is caused by fungi or bacteria. These pathogens can produce cankers, wilts, stem or root rots, and even anthracnose, but the most common symptom, of course, is that various plant parts (or the entire plant) will begin to die back.
Symptom Analysis
Symptom Analysis
The symptoms of dieback can be gradual or slightly more abrupt. Usually, however, they are slow in developing and tend to be uniform among the various parts of a plant.
Some plants may have more localized symptoms, with all twigs affected or all branches affected but not the rest of the plant. Some potential symptoms include:
  • Dead or dying branches and twigs
  • Dieback that starts in the top of a plant and progresses downward (though it can start lower, especially for conifers)
  • A delayed flush of growth in the spring
  • Leaf margins become scorched
  • Pale green or yellow leaves
  • Leaves that are small or otherwise distorted
  • Early leaf drop
  • Reduced growth of twigs and stems
  • Thinning of crown foliage
  • Production of suckers on trunk and branches
  • Premature fall coloration (in tree species like birch, sweetgum, maple, oak, ash, etc)
The symptoms of dieback can occur within just one season or become worse each and every year.
Disease Cause
Disease Cause
There are several types of dieback, each of which has a different cause with which it is associated.
"dieback" as a standalone issue, including the condition known as Staghead, is caused by fungal or bacterial infections. Staghead is a slow dieback that occurs on the upper branches of a tree, named as such because the dead limbs look much like the head of a stag.
Other causes of dieback symptoms include:
  • Cankers or wilts
  • Stem or root rots
  • Nematodes
  • Stem or root boring insects
  • Pavement being placed over root systems
  • Winter injury from cold
  • Salt damage
  • Lack of moisture (or excess of moisture)
  • Lack of an essential nutrient or element
Trees and shrubs that are attacked by insects, exposed to extremely high or low temperatures, or experience severe and frequent fluctuations in soil moisture are the most likely to suffer from dieback. These stress factors alone or in combination with each other can reduce leaf and shoot growth, and progress into death of twigs and branches.
Although any of these issues can lead to dieback, the most serious consequences tend to occur when the roots of a plant are damaged. Similarly, trees and shrubs that are planted improperly or in unfavorable locations are more likely to develop this condition.
Solutions
Solutions
There are a few things to try when dieback becomes apparent:
  • Fertilize and water the plants - these two steps, along with judicious pruning, can help reduce the stress on the root system and encourage renewed vigor
  • Have an arborist check to see if plant roots are girdling
  • Test soil pH and adjust accordingly
  • Remove and destroy infected twigs and branches
Prevention
Prevention
The best way to prevent dieback is to match the plant to the site. Make sure the conditions provided for a new planting match its needs.
  • Plant properly in deep, fertile well-draining soil
  • Make sure plant roots won’t be confined when the plant reaches its mature size
  • Avoid changes to the growing site
  • If soil compaction might be an issue, apply a few inches of wood chips and eliminate traffic over the root area
  • Fertilize and water appropriately
It is also important to avoid potential infection with pathogens that can cause dieback:
  • Avoid binding or wounding the roots and trunk whenever possible
  • Avoid excessive pruning
  • Disinfect all tools before working with plants to reduce the spread of disease
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
close
Fire ants
plant poor
Fire ants
Fire ants gnaw on the roots of plants and are aggressive toward people.
Overview
Overview
Fire ants are a group of ants that are known for their aggressive behavior and painful stings. Some fire ants are native and others are invasive from other countries. Once they reach plants, they climb them and chew away at leaves and flower buds.
Fire ants also kill and eat beneficial insects such as caterpillars, ladybugs, mantis, and native ants. They can be a problem any time temperatures are above freezing, but new infestations are most likely to appear when brought in via contaminated material such as potting soil or mulch, or when insecticides have harmed populations of beneficial insects that would otherwise control populations of fire ants.
They can be difficult to control, especially once populations become large. Plant damage is typically minor, but fire ants can destroy seedlings.
Symptom Analysis
Symptom Analysis
The number one symptom of fire ants is seeing the ants themselves which are red or black in color. Ant mounds in the ground are also signs. Fire ant mounds rarely exceed 46 cm in diameter. If a fire ant mound is disturbed, many fast-moving, aggressive ants will emerge. These ants will bite and then painfully sting.
Even if no ants are visible, their damage might be apparent. Chewed leaf and flower edges might indicate fire ants. Fully eaten seedlings are another sign.
Solutions
Solutions
Caution: fire ants are venomous and cause painful bites which can be fatal in the case of a rare but significant allergy.
Fire ants can be a painful pest to have around for you and your plants. Keeping them under control will ensure comfortable gardening for all.
For less severe cases:
  • Physically remove mounds. Dig out and remove entire mounds (remember, they go deeper than they seem).
  • Use citrus oil. Pour citrus oil, which is toxic to fire ants, down their holes.
For severe cases:
  • Use ant bait. For a chemical solution, broadcast insecticide bait formulated for fire ants in the area around a mound. Apply the bait during a dry evening so the ants can forage for it at night. Look for products that contain Indoxacarb.
  • Release phorid flies. Introduce or promote beneficial phorid flies to gardens. These parasitic flies attack invasive fire ants.
  • Hire a professional. Some ant baits are only available to professional exterminators. For serious cases of fire ants, consider hiring a professional.
Prevention
Prevention
Fire ants become more difficult to control as they establish themselves, so try to prevent them or treat them early.
  • Monitor new material. Do not bring in any soil or plants from known infested areas, unless if they are "Quarantine Approved." Make sure to check new material for fire ants.
  • Apply insecticide. Some warm and humid areas have high fire ants populations. In these areas, spread a granular fire ants insecticide such as Varsity in the spring near gardens to prevent these unwelcome visitors.
  • Treat early. Spot treat at the first sight of any fire ants mound, as larger mounds are more difficult to treat.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
care_more_info

More About Korean Spruce

Plant Type
Plant Type
Tree
plantfinder

Find your perfect green friends.

Plan your green oasis based on your criteria: plant type, pet safety, skill level, sites, and more.
care_faq

Common Problems

How can I effectively prevent pests and diseases in the early stages of growing korean spruce?

more more
Korean spruce has only some resistance to pests and diseases. Therefore, the soil needs to be sterilized before planting and properly drained during rainy seasons. Take care not to over prune the tree during maintenance.

How can I prevent korean spruce from being tilted or knocked down by a gale?

more more
When newly-transplanted, the roots of the seedling have not secured a firm grip to the ground, making the tree highly likely to be tilted or blown down in a gale. Therefore, a trellis can be set up for the seedling using a few wood sticks or metal pipes or poles. Cushion the contact points between the trellis and the trunk with hay or protective cloths to prevent the trunk from being bruised by the trellis.
product icon close
Your Ultimate Guide to Plants
Identify grow and nurture the better way!
product icon
17,000 local species +400,000 global species studied
product icon
Nearly 5 years of research
product icon
80+ scholars in botany and gardening
ad
product icon close
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
Lighting
close
Indoor
Indoor
Outdoor
Choose a site here for personalized care tips.
Requirements
Full sun
Ideal
Above 6 hours sunlight
Partial sun
Tolerance
About 3-6 hours sunlight
Watch how sunlight gracefully moves through your garden, and choose spots that provide the perfect balance of light and shade for your plants, ensuring their happiness.
Discover care info about seasonal tips, plant diseases, and more?
Temperature
close
Indoor
Indoor
Outdoor
Choose a site here for personalized care tips.
Requirements
Ideal
Tolerable
Unsuitable
Just like people, each plant has its own preferences. Learn about your plants' temperature needs and create a comforting environment for them to flourish. As you care for your plants, your bond with them will deepen. Trust your intuition as you learn about their temperature needs, celebrating the journey you share. Lovingly monitor the temperature around your plants and adjust their environment as needed. A thermometer can be your ally in this heartfelt endeavor. Be patient and gentle with yourself as you explore your plants' temperature needs. Cherish your successes, learn from challenges, and nurture your garden with love, creating a haven that reflects the warmth of your care.
Discover care info about seasonal tips, plant diseases, and more?
Cookie Management Tool
In addition to managing cookies through your browser or device, you can change your cookie settings below.
Necessary Cookies
Necessary cookies enable core functionality. The website cannot function properly without these cookies, and can only be disabled by changing your browser preferences.
Analytical Cookies
Analytical cookies help us to improve our application/website by collecting and reporting information on its usage.
Cookie Name Source Purpose Lifespan
_ga Google Analytics These cookies are set because of our use of Google Analytics. They are used to collect information about your use of our application/website. The cookies collect specific information, such as your IP address, data related to your device and other information about your use of the application/website. Please note that the data processing is essentially carried out by Google LLC and Google may use your data collected by the cookies for own purposes, e.g. profiling and will combine it with other data such as your Google Account. For more information about how Google processes your data and Google’s approach to privacy as well as implemented safeguards for your data, please see here. 1 Year
_pta PictureThis Analytics We use these cookies to collect information about how you use our site, monitor site performance, and improve our site performance, our services, and your experience. 1 Year
Cookie Name
_ga
Source
Google Analytics
Purpose
These cookies are set because of our use of Google Analytics. They are used to collect information about your use of our application/website. The cookies collect specific information, such as your IP address, data related to your device and other information about your use of the application/website. Please note that the data processing is essentially carried out by Google LLC and Google may use your data collected by the cookies for own purposes, e.g. profiling and will combine it with other data such as your Google Account. For more information about how Google processes your data and Google’s approach to privacy as well as implemented safeguards for your data, please see here.
Lifespan
1 Year

Cookie Name
_pta
Source
PictureThis Analytics
Purpose
We use these cookies to collect information about how you use our site, monitor site performance, and improve our site performance, our services, and your experience.
Lifespan
1 Year
Marketing Cookies
Marketing cookies are used by advertising companies to serve ads that are relevant to your interests.
Cookie Name Source Purpose Lifespan
_fbp Facebook Pixel A conversion pixel tracking that we use for retargeting campaigns. Learn more here. 1 Year
_adj Adjust This cookie provides mobile analytics and attribution services that enable us to measure and analyze the effectiveness of marketing campaigns, certain events and actions within the Application. Learn more here. 1 Year
Cookie Name
_fbp
Source
Facebook Pixel
Purpose
A conversion pixel tracking that we use for retargeting campaigns. Learn more here.
Lifespan
1 Year

Cookie Name
_adj
Source
Adjust
Purpose
This cookie provides mobile analytics and attribution services that enable us to measure and analyze the effectiveness of marketing campaigns, certain events and actions within the Application. Learn more here.
Lifespan
1 Year
This page looks better in the app
Open