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Add to My Garden Cuban royal palm
Roystonea regia
Also known as: Royal palm
Cuban royal palm (Roystonea regia) is a perennial evergreen tree that can grow to be 20 to 30 m tall. It has leaves that can grow to be 3 m long. The leaves curl over in the same manner as palm leaves. This species blooms in summer with showy yellow, fragrant blossoms. It is a quick-growing species and is often planted in long rows or as a centerpiece in landscapes.
10 to 13
Hardiness Zones
Care Guide for Cuban royal palm
Soil
Loam, Sand, Clay, Chalky, Sandy loam, Acidic, Neutral
Sunlight
Full sun, Partial sun
Hardiness Zones
10 to 13
Planting Time
Spring
Harvest Time
Fall, Winter
Tips, advice, and instructions for over 13,000 species that you will find nowhere else
Scan QR code to download
Cuban royal palm
Water
Every 2 weeks
Sunlight
Full sun
Hardiness Zones
10 to 13
Download and print this plant care card and attach it to your plants
Download
Cuban royal palm
Water
Every 2 weeks
Sunlight
Full sun
Hardiness Zones
10 to 13
Download
Cuban royal palm
Water
Every 2 weeks
Sunlight
Full sun
Hardiness Zones
10 to 13
Download
Questions About Cuban royal palm
Watering 
Pruning 
Temperature What is the best way to water my Cuban royal palm?
When you keep your Cuban royal palm indoors, the best way to water this plant is to apply water directly to the top layer of soil in the container. The water you use should be rainwater or distilled water and should be at or around room temperature. The best way to tell if your Cuban royal palm needs water is to poke your finger into the soil. If you notice that the first few inches of soil are dry, you should add enough water to moisten those layers and cause excess water to drain through the bottom of your plant’s container. When in doubt, it is always safer to underwater your Cuban royal palm, as overwatering is far more likely to cause fatal complications such as root rot. When growing the Cuban royal palm outdoors, the rainfall alone may provide all the water it needs. However, if you receive rain less than once per week during the growing season, you will likely need to provide some supplemental water to the soil as well. Again, rainwater or distilled water will work best for this plant whether it grows indoors or outdoors.
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What should I do if I water Cuban royal palm too much/too little?
Some signs that the plants are not getting enough water are the brown tips on the plant.
Due to lack of water, the leaves become wilted and drooping, appearing lifeless at the very beginning. The leaves can become brown, crispy, and start to dry out if the water shortage is severe. When this happens, water as soon as possible.
Another thing about overwatering is that if this happens, then root rot can begin to set in. You need to remove all the damaged roots from the soil, especially if they appear mushy, fragile, and black. To help with these issues, it's important to cut off a larger part of the root.
Overwatering can also leave the leaves looking brown and ready to fall off. This can happen very early, so you should drain the excess water and wait for the soil to dry before watering to help the plant recover.
Throw away the soil from the pot if there are signs of root rot. Clean everything thoroughly and make sure to put in the pebbles so it will help with proper drainage. Discard any excess water at the base of the pot if you notice tan rings or reddish-brown spots on the leaves. Check the plant's environment and make sure it is in a well-ventilated location so that the soil dries faster to prevent it from rotting again later.
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Free
What should I do if I water my Cuban royal palm too much or too little?
Overwatering is the main issue to look out for when watering the Cuban royal palm, and there are several sure signs that will indicate when this problem has arrived. The Cuban royal palm that receives too much water will begin to develop brown, drooping leaves. The stems of the plant may also become mush and could produce a foul odor. Overwatering also leads to the common issue of root rot which can be fatal when unchecked. If you catch overwatering early enough, you may be able to resolve the issue by simply reducing your watering rate or by adding sand to the container to help improve soil drainage. In more severe overwatering cases, you will need to remove your Cuban royal palm from its container, remove any rotten roots, and repot it in a new container. You should use a similar method if you grow your Cuban royal palm outdoors and find that it is consistently receiving too much water. Again, soil drainage may be the cause, which is why you should consider transplanting your Cuban royal palm to a different outdoor growing location, preferably one with looser soils. Underwatered Cuban royal palm will exhibit drooping leaves as well, but they are more likely to be yellow than brown. You’ll also notice slower growth in the Cuban royal palm that does not receive enough water. If you see such signs, you’ll need to increase the frequency with which you water your Cuban royal palm.
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Free
How often should I water my Cuban royal palm?
Typically, you will need to water your Cuban royal palm about once per week during the growing season, which takes place throughout spring, summer, and early fall. The specific conditions of your growing environment may alter the rate at which the soil in your plant’s container dries out. As such, it helps to know how to monitor the soil for moisture to determine the watering frequency, rather than relying on a strict once-per-week rule. At times, this can mean you may need to water multiple times per week or water about once every ten days during the growing season.
The same guidelines apply when you grow the Cuban royal palm outdoors. The only difference is that rainfall could affect your watering frequency. For example, if you receive about an inch or rainfall during the week, you should not add additional water as this could cause overwatering. You’ll also need to reduce your watering frequency during the winter when this plant is not putting forth as much active growth. In winter, you should allow the soil to dry out a bit more between waterings. Often this means watering your Cuban royal palm about once every other week or once every three to four weeks.
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How should I water my Cuban royal palm differently if I grow it indoors?
Since most gardeners grow Cuban royal palm indoors, they must be well prepared to alter their indoor growing environment to meet the needs of Cuban royal palm. The main issue with an indoor location is that it is likely not as humid as the Cuban royal palm would like. The quickest remedy for this is to run a humidifier in the room where your Cuban royal palm grows. You can also place this plant in your bathroom, a room that tends to be more humid than others, so long as there is enough light that reaches it. You should also monitor the effect of air conditioners and heating units in your indoor growing location, as those elements can cause the soil in the container of your Cuban royal palm to dry out more quickly, which will lead you to water it more often than you normally would. If you want to grow your Cuban royal palm outdoors, you should first ensure that you region provides the warmth and humidity that your Cuban royal palm needs. You should also be prepared to anticipate the natural rainfall, as weekly rain can be enough for your Cuban royal palm to survive.
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What should I consider when watering my Cuban royal palm in different seasons and growth periods?
The rate at which you supply water for your Cuban royal palm will change depending on the current season. During spring and summer, when this plant is in its most active growth stage, you should plan to give it water about once per week, altering that rate slightly in the case of extreme heat. During the late fall and winter, the growth of your Cuban royal palm will slow, which means it will need less water. In winter, you can give this plant water about once every two weeks or less. For outdoor plants, you probably won't need to water at all during the late fall and winter, as any natural rainfall will likely meet the lower water needs of your Cuban royal palm during this time. The Cuban royal palm typically does not offer a large display of flowers or fruits, and it also tends to maintain the same moderate to slow growth rate throughout its life, which means that its watering needs will remain relatively the same regardless of the plant’s age.
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Common Pests & Diseases
Common issues for Cuban royal palm based on 10 million real cases
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.
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.
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Keep your leafy friends healthy and happy.
Diagnose your plant, and learn how to prevent and treat plant diseases.
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
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Scan the QR code with your phone camera to download the app
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Sign in with Apple
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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
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
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
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
- 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 400,000+ plants and unlimited guides at your fingertips...
Scan the QR code with your phone camera to download the app
Sign in/sign up
Sign in with Apple
Sign in with Google
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
- Both leaves and blossom on the tips of branches will go brown and wither.
- Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
- Any fruit that does appear will turn wrinkled and fail to develop.
- Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
Solutions
There are a number of appropriate solutions to control fruit withering:
- Remove any fruit as soon as it shows any signs of infection. Do not compost.
- Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Prevention
Preventative measures include:
- Ensuring adequate spacing between plants or trees.
- Staking plants that are prone to tumbling to prevent moisture or humidity build up.
- Prune correctly so that there is adequate air movement and remove any dead or diseased branches that may carry spores.
- Practice good plant hygiene by removing fallen material and destroying it as soon as possible.
Continue reading in our app - it's better
A database of 400,000+ plants and unlimited guides at your fingertips...
Scan the QR code with your phone camera to download the app
Sign in/sign up
Sign in with Apple
Sign in with Google
Distribution Map
Habitat
Tropical hardwood hammocks, mixed swamp vegetation
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
More Info
Plant Type
Palm
Flower Color
White
Bloom Time
Spring, Summer, Fall
Symbolism
Solitary and majestic
Scientific Classification
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Bloom Time
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Garden Usage
Plants of the genus Clematis are often planted in the garden and can also be grown as potted plants. There are a few tips needed to care for them. Most common asian virginsbower are vines and can be used to create flowering walls or decorative arches, as well as being planted alongside trees, shrubs, etc.
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Bloom Time
Spring, summer
Garden Usage
Shrubs and vines in the genus Jasminum are famous for their attractive, pale, star-shaped blooms of flowers, distinctive fragrance, and oil. Despite their delicate appearance, they are not difficult to maintain. They tolerate different temperature ranges, but prefer slightly drier soils in combination with a warm, humid environment. However, given the large number of different varieties, it is important to tailor conditions to the variety you choose.
Peace lily
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Bloom Time
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Garden Usage
Spathiphyllum spp. are popular indoor, ornamental plants. They are easy to care for and can grow well with little sunlight. With proper care, they can bloom twice a year for two months or longer. The plant's spathe is mostly white, or light green for a few varieties. Its leaves are elliptic and have dark green, bright surfaces.
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The spider plant is a green perennial plant with long, thin leaves that earn it another name, "ribbon plant." It has spread far from its native Africa because it is easy to care for. Since spider plants grow well in partial or full shade, they have become popular houseplants.
Bloom Time
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Garden Usage
Spider plant is a common ornamental potted plant with good adaptability and simple maintenance. The leaves are green in all seasons. The flowers are white and elegant, showing between spring and summer.
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Care Guide
Care FAQ
Pests & Diseases
Distribution
More Info
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Add to My Garden Cuban royal palm
Roystonea regia
Also known as: Royal palm
10 to 13
Hardiness Zones
Care Guide for Cuban royal palm
Soil
Loam, Sand, Clay, Chalky, Sandy loam, Acidic, Neutral
Sunlight
Full sun, Partial sun
Hardiness Zones
10 to 13
Planting Time
Spring
Harvest Time
Fall, Winter
Tips, advice, and instructions for over 13,000 species that you will find nowhere else
Cuban royal palm
Roystonea regia
Water
Every 2 weeks
Sunlight
Full sun
Hardiness Zones
10 to 13
Download
Questions About Cuban royal palm
Watering Pruning Temperature What is the best way to water my Cuban royal palm?
Free
What should I do if I water Cuban royal palm too much/too little?
Free
What should I do if I water my Cuban royal palm too much or too little?
Free
How often should I water my Cuban royal palm?
How should I water my Cuban royal palm differently if I grow it indoors?
Show More ![more]()
You’ve got questions. We’ve got answers.
Let us help take all the guesswork out of your gardening.
More Questions People Also Ask
Common Pests & Diseases
Common issues for Cuban royal palm based on 10 million real cases
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 ![more]()
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 ![more]()
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Solutions: There are a number of appropriate solutions to control fruit withering: Remove any fruit as soon as it shows any signs of infection. Do not compost. Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Learn More ![more]()
Keep your leafy friends healthy and happy.
Diagnose your plant, and learn how to prevent and treat plant diseases.
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 400,000+ plants
unlimited guides at your fingertips...
unlimited guides at your fingertips...
Sign in/sign up
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
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
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
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
- 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 400,000+ plants
unlimited guides at your fingertips...
unlimited guides at your fingertips...
Sign in/sign up
Fruit withering
Fungal infection or normal ripening can cause the fruit to dry out.
Overview
Fruit withering is common on many tree fruits, including apples, pears, peaches, cherries, and plums, as well as fruiting shrubs. It is caused by a fungal pathogen and will result in wrinkled and desiccated fruit.
Symptom Analysis
Here are the most common symptoms in the order that they are likely to occur.
- Both leaves and blossom on the tips of branches will go brown and wither.
- Gray powdery patches will appear on infected leaves and flowers, and this will be most apparent after rain.
- Any fruit that does appear will turn wrinkled and fail to develop.
- Branch tips begin to die, progressing back to larger branches, causing general deterioration of the tree or plant.
Disease Cause
The withering is caused by one of two fungal pathogens, one called Monilina laxa and the other called M. fructigen. The spores overwinter on infected plant material and are then spread the following spring by wind, rain, or animal vectors. The problem will start to become noticeable in mid-spring, but will increase in severity as summer progresses and the fungus grows. If not addressed, the disease will intensify and spread to other plants in the vicinity.
Solutions
There are a number of appropriate solutions to control fruit withering:
- Remove any fruit as soon as it shows any signs of infection. Do not compost.
- Use a fungicide prior to leaf bud and then as per manufacturers instructions throughout the season.
Prevention
Preventative measures include:
- Ensuring adequate spacing between plants or trees.
- Staking plants that are prone to tumbling to prevent moisture or humidity build up.
- Prune correctly so that there is adequate air movement and remove any dead or diseased branches that may carry spores.
- Practice good plant hygiene by removing fallen material and destroying it as soon as possible.
Continue reading in our app - it's better
A database of 400,000+ plants
unlimited guides at your fingertips...
unlimited guides at your fingertips...
Sign in/sign up
Distribution Map
Habitat
Tropical hardwood hammocks, mixed swamp vegetation
Map
Native
Cultivated
Invasive
Potentially invasive
Exotic
No species reported
More Info
Plant Type
Palm
Flower Color
White
Bloom Time
Spring, Summer, Fall
Symbolism
Solitary and majestic
Scientific Classification
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