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America canna
Canna 'America'
America canna are a small but widely cultivated group of flowering plants that are not true lillies at all. Found mostly in tropical regions, america canna are very common ornamentals, with several varieties bred to accentuate their large, showy flowers. The seeds of america canna are utilized in traditional jewelry and musical instruments.
Hardiness Zones
7 to 12
Care Guide for America canna
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America canna
Water
Twice per week
Hardiness Zones
7 to 12
Planting Time
Spring, Fall
Key Facts About America canna
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Attributes of America canna
Planting Time
Spring, Fall
Ideal Temperature
15 - 38 ℃
Scientific Classification of America canna
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Common Pests & Diseases About America canna
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Common issues for America canna based on 10 million real cases
Slug or snails
Snails are a class of mollusks with hard shells into which their soft bodies can retract. Slugs are similar soft, fleshy mollusks but lack the shells. Both nibble at leaves and are regularly seen in wet or rainy conditions.
Solutions: If your plant has a serious problem: Choose commercial slug and snail baits. Those with iron phosphate as the active ingredient are fairly effective, killing them within a few days. These are considered safer for animals than baits containing metaldehyde. Baits should be spread out around plants at night and cleared away in the morning along with any dead pests as they can be toxic to birds and pets. If it is a less serious case, there are a number of organic approaches: Eliminate their hiding spots. It's the easiest way to control slugs and snails. Thick weeds, unused flower pots, boards, or stones are their favorite hiding spots. Hand-pick. You can also follow up with searching for them with a flashlight at night and picking them off plants. Board trap. Trap them by slightly propping up one end of a small board in your garden which will give them a place to hide (remove it and dispose of the pests during the day) Beer trap. Place a shallow dish of either beer or a mixture of 1 cup water with 1 teaspoon each active dry yeast and sugar buried up to the rim in your garden’s soil. Pests will fall in and drown.
Leaf rot
This pathogen can cause the leaves to rot.
Solutions: Bacterial infections need to be treated quickly to prevent the spread to neighboring, healthy plants, potentially wiping out large sections of your indoor or outdoor garden. In mild cases: Use sterilized (10% bleach solution) pruning shears or scissors to remove any infected plant parts, making sure to dispose of them off site. Use a copper-based bactericide to treat the unaffected foliage, as well as the soil, and neighboring plants. Follow the manufacturer’s rate and timing directions found on the product label. In severe cases, where more than half the leaves are affected: Remove all of the infected plants from the garden, disposing of them off site. Treat the soil and neighboring plants using a copper-based bactericide. Follow the manufacturer’s rate and timing directions found on the product label.
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Slug or snails
Snails are a class of mollusks with hard shells into which their soft bodies can retract. Slugs are similar soft, fleshy mollusks but lack the shells. Both nibble at leaves and are regularly seen in wet or rainy conditions.
Symptom Analysis
Slugs and snails, two closely related pests, cause a great deal of feeding damage in gardens worldwide. They have rasping mouths that tear holes in leaves and flowers and are capable of consuming small plants entirely. They favor humid conditions, which means that they are generally active at night or on cloudy and rainy days.
Solutions
If your plant has a serious problem:
- Choose commercial slug and snail baits. Those with iron phosphate as the active ingredient are fairly effective, killing them within a few days. These are considered safer for animals than baits containing metaldehyde.
- Baits should be spread out around plants at night and cleared away in the morning along with any dead pests as they can be toxic to birds and pets.
If it is a less serious case, there are a number of organic approaches:
- Eliminate their hiding spots. It's the easiest way to control slugs and snails. Thick weeds, unused flower pots, boards, or stones are their favorite hiding spots.
- Hand-pick. You can also follow up with searching for them with a flashlight at night and picking them off plants.
- Board trap. Trap them by slightly propping up one end of a small board in your garden which will give them a place to hide (remove it and dispose of the pests during the day)
- Beer trap. Place a shallow dish of either beer or a mixture of 1 cup water with 1 teaspoon each active dry yeast and sugar buried up to the rim in your garden’s soil. Pests will fall in and drown.
Prevention
To prevent future damage, there are a number of effective non-chemical measures.
- Create a gritty barrier. You can use agricultural-grade diatomaceous earth, corn or wheat bran, or coffee grounds on the soil around your plant; you must replenish it after it rains.
- Set up a copper barrier. Snails and slugs can’t cross copper so copper tape can be made into a “fence” to protect your individual plant or seedlings.
Continue reading in our app - it's better
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Leaf rot
This pathogen can cause the leaves to rot.
Overview
Leaf rot is very common among both house plants and garden plants. It affects foliage and occurs mainly when the leaves become wet due to rain or misting by the gardener. The cause is fungal disease and this is facilitated by the fungal spores adhering to wet leaves then penetrating the leaf and expanding rapidly. Damp conditions and poor air circulation will increase chances of infection taking place. Another factor are leaves that are damaged or have been penetrated by sap sucking insects that facilitate plant penetration.
Symptom Analysis
- Spores are able to cling to a damp leaf and penetrate, often through an existing wound.
- A small dark brown mark appears which expands rapidly as sporulation starts to take place.
- Quite quickly these bull's eye like circles can link together and the whole leaf turns dark and loses texture.
- Leaf drop occurs.
Disease Cause
These symptoms are caused by a bacterial infection invading the plant. Bacteria from many sources in the environment (air, water, soil, diseased plants) enter a plant through wounds, or in some cases the stomata when they are open. Once inside the leaf tissue, the bacteria feed and reproduce quickly, breaking down healthy leaves.
Bacterial infections threaten most plant species, and are more prominent in wet weather that more easily transfers the bacteria from plant to plant, or from soil to plant.
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
Scan the QR code with your phone camera to download the app
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
Continue reading in our app - it's better
A database of 400000+ plants and unlimited guides at your fingertips...
Scan the QR code with your phone camera to download the app
Treat and prevent plant diseases.
AI-powered plant doctor helps you diagnose plant problems in seconds.
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!
17,000 local species +400,000 global species studied
Nearly 5 years of research
80+ scholars in botany and gardening
Botanist in your pocket
Scan the QR code with your phone camera to download the app
About
Care Guide
More Info
Pests & Diseases
America canna
Canna 'America'
America canna are a small but widely cultivated group of flowering plants that are not true lillies at all. Found mostly in tropical regions, america canna are very common ornamentals, with several varieties bred to accentuate their large, showy flowers. The seeds of america canna are utilized in traditional jewelry and musical instruments.
Hardiness Zones
7 to 12
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Care Guide for America canna
Feedback
Know the light your plants really get.
Find the best spots for them to optimize their health, simply using your phone.
Download the App for Free
Download
Key Facts About America canna
Feedback
Attributes of America canna
Planting Time
Spring, Fall
Ideal Temperature
15 - 38 ℃
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Explore a rich botanical encyclopedia for deeper insights
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Scientific Classification of America canna
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Common Pests & Diseases About America canna
Feedback
Common issues for America canna based on 10 million real cases
Slug or snails
Snails are a class of mollusks with hard shells into which their soft bodies can retract. Slugs are similar soft, fleshy mollusks but lack the shells. Both nibble at leaves and are regularly seen in wet or rainy conditions.
Solutions: If your plant has a serious problem: Choose commercial slug and snail baits. Those with iron phosphate as the active ingredient are fairly effective, killing them within a few days. These are considered safer for animals than baits containing metaldehyde. Baits should be spread out around plants at night and cleared away in the morning along with any dead pests as they can be toxic to birds and pets. If it is a less serious case, there are a number of organic approaches: Eliminate their hiding spots. It's the easiest way to control slugs and snails. Thick weeds, unused flower pots, boards, or stones are their favorite hiding spots. Hand-pick. You can also follow up with searching for them with a flashlight at night and picking them off plants. Board trap. Trap them by slightly propping up one end of a small board in your garden which will give them a place to hide (remove it and dispose of the pests during the day) Beer trap. Place a shallow dish of either beer or a mixture of 1 cup water with 1 teaspoon each active dry yeast and sugar buried up to the rim in your garden’s soil. Pests will fall in and drown.
Learn More About the Slug or snails ![more]()
Leaf rot
This pathogen can cause the leaves to rot.
Solutions: Bacterial infections need to be treated quickly to prevent the spread to neighboring, healthy plants, potentially wiping out large sections of your indoor or outdoor garden. In mild cases: Use sterilized (10% bleach solution) pruning shears or scissors to remove any infected plant parts, making sure to dispose of them off site. Use a copper-based bactericide to treat the unaffected foliage, as well as the soil, and neighboring plants. Follow the manufacturer’s rate and timing directions found on the product label. In severe cases, where more than half the leaves are affected: Remove all of the infected plants from the garden, disposing of them off site. Treat the soil and neighboring plants using a copper-based bactericide. Follow the manufacturer’s rate and timing directions found on the product label.
Learn More About the Leaf rot ![more]()
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Solutions: If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Learn More About the Aged yellow and dry ![more]()
Slug or snails
Snails are a class of mollusks with hard shells into which their soft bodies can retract. Slugs are similar soft, fleshy mollusks but lack the shells. Both nibble at leaves and are regularly seen in wet or rainy conditions.
Symptom Analysis
Slugs and snails, two closely related pests, cause a great deal of feeding damage in gardens worldwide. They have rasping mouths that tear holes in leaves and flowers and are capable of consuming small plants entirely. They favor humid conditions, which means that they are generally active at night or on cloudy and rainy days.
Solutions
If your plant has a serious problem:
- Choose commercial slug and snail baits. Those with iron phosphate as the active ingredient are fairly effective, killing them within a few days. These are considered safer for animals than baits containing metaldehyde.
- Baits should be spread out around plants at night and cleared away in the morning along with any dead pests as they can be toxic to birds and pets.
If it is a less serious case, there are a number of organic approaches:
- Eliminate their hiding spots. It's the easiest way to control slugs and snails. Thick weeds, unused flower pots, boards, or stones are their favorite hiding spots.
- Hand-pick. You can also follow up with searching for them with a flashlight at night and picking them off plants.
- Board trap. Trap them by slightly propping up one end of a small board in your garden which will give them a place to hide (remove it and dispose of the pests during the day)
- Beer trap. Place a shallow dish of either beer or a mixture of 1 cup water with 1 teaspoon each active dry yeast and sugar buried up to the rim in your garden’s soil. Pests will fall in and drown.
Prevention
To prevent future damage, there are a number of effective non-chemical measures.
- Create a gritty barrier. You can use agricultural-grade diatomaceous earth, corn or wheat bran, or coffee grounds on the soil around your plant; you must replenish it after it rains.
- Set up a copper barrier. Snails and slugs can’t cross copper so copper tape can be made into a “fence” to protect your individual plant or seedlings.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
unlimited guides at your fingertips...
Leaf rot
This pathogen can cause the leaves to rot.
Overview
Leaf rot is very common among both house plants and garden plants. It affects foliage and occurs mainly when the leaves become wet due to rain or misting by the gardener. The cause is fungal disease and this is facilitated by the fungal spores adhering to wet leaves then penetrating the leaf and expanding rapidly. Damp conditions and poor air circulation will increase chances of infection taking place. Another factor are leaves that are damaged or have been penetrated by sap sucking insects that facilitate plant penetration.
Symptom Analysis
- Spores are able to cling to a damp leaf and penetrate, often through an existing wound.
- A small dark brown mark appears which expands rapidly as sporulation starts to take place.
- Quite quickly these bull's eye like circles can link together and the whole leaf turns dark and loses texture.
- Leaf drop occurs.
Disease Cause
These symptoms are caused by a bacterial infection invading the plant. Bacteria from many sources in the environment (air, water, soil, diseased plants) enter a plant through wounds, or in some cases the stomata when they are open. Once inside the leaf tissue, the bacteria feed and reproduce quickly, breaking down healthy leaves.
Bacterial infections threaten most plant species, and are more prominent in wet weather that more easily transfers the bacteria from plant to plant, or from soil to plant.
Solutions
Bacterial infections need to be treated quickly to prevent the spread to neighboring, healthy plants, potentially wiping out large sections of your indoor or outdoor garden.
In mild cases: Use sterilized (10% bleach solution) pruning shears or scissors to remove any infected plant parts, making sure to dispose of them off site. Use a copper-based bactericide to treat the unaffected foliage, as well as the soil, and neighboring plants. Follow the manufacturer’s rate and timing directions found on the product label.
In severe cases, where more than half the leaves are affected: Remove all of the infected plants from the garden, disposing of them off site. Treat the soil and neighboring plants using a copper-based bactericide. Follow the manufacturer’s rate and timing directions found on the product label.
Prevention
- Clean up garden debris at the end of the season, especially if it contains any diseased plant tissue. Diseases can overwinter from season to season and infect new plants.
- Avoid overhead watering to prevent transferring pathogens from one plant to another, and to keep foliage dry.
- Mulch around the base of plants to prevent soil-borne bacteria from splashing up onto uninfected plants.
- Sterilize cutting tools using a 10% bleach solution when gardening and moving from one plant to another.
- Do not work in your garden when it is wet.
- Rotate crops to prevent the buildup of bacteria in one site due to continuous cropping.
- Use a copper or streptomycin-containing bactericide in early spring to prevent infection. Read label directions carefully as they are not suitable for all plants.
- Ensure plants are well spaced and thin leaves on densely leaved plants so that air circulation is maximised.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
unlimited guides at your fingertips...
Aged yellow and dry
Natural aging can cause leaves to turn yellow and dry out.
Overview
Regardless of the type of plant or where it is grown, at some point, it will begin to aged yellow and dry. This is a natural, unavoidable process that happens when the plant has completed all of the steps in its life.
Annual plants go through this process at the end of a single growing season. Perennial plants live for multiple years, if not tens or hundreds of years, but will still ultimately exhibit these symptoms.
Symptom Analysis
When plants have progressed through their natural developmental stages and are nearing the end of their lifecycle, they begin showing signs of decline. Leaves will start to yellow and droop, and over time they turn papery brown and dry.
Once completely dry, the leaves begin to fall from the plant until the entire plant has dried out.
Disease Cause
At the end of its life, genetic coding within the plant increases the production of ethylene, a phytohormone that controls senescence or natural aging and death. Cell division stops, and the plant begins catabolizing resources to use in other parts of the plant.
As this happens, the tissues begin yellow and drying until the entire plant is desiccated and perishes.
Solutions
If the yellowing and drying of leaves and flowers is a natural progression due to age, nothing can be done to slow or stop the process. Once hormones within the plant begin the process of senescence, it’s irreversible.
Prevention
Unfortunately, there is no way to prevent plants from dying of “old age.” To help prolong their life, and put off symptoms of aged yellow and dry for as long as possible, take care of them by giving them enough water, fertilizing them appropriately, and making sure they get enough sunlight.
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
unlimited guides at your fingertips...
Treat and prevent plant diseases.
AI-powered plant doctor helps you diagnose plant problems in seconds.
Download the App for Free
Your Ultimate Guide to Plants
Identify grow and nurture the better way!
17,000 local species +400,000 global species studied
Nearly 5 years of research
80+ scholars in botany and gardening
Continue reading in our app - it's better
A database of 400000+ plants
unlimited guides at your fingertips...
unlimited guides at your fingertips...
