How to Grow Coconut Palms Indoors
If you’re looking to transport yourself to the beach—even if only in your mind—then you should consider trying your hand at growing a tropical varietal, like a coconut palm. Word of warning, though: Unless you do actually call a beachside bungalow home, this pesky palm will probably give you a run for your money.
Characterized by a tall, grey-brown slightly curved trunk, sprawling palm frond, and, of course, coconuts, this plant is native to many tropical regions (think: the western pacific islands, Florida coast or Caribbean islands) and loves all things, well, tropical. Even with unlimited space and resources, it can be tough for a home gardener to replicate the moisture, temperature, and sun levels needed for the coconut palm to thrive indoors—not to mention that mature plans (between four and 10-years-old) can sprout to be up to 100 feet tall!
Besides acting as a charming backdrop to every island paradise dream out there, coconut palms are an extremely valuable plant, regularly harvested to provide food and oil, as well as material for clothing, construction, and more. While it’s built up a tough reputation as a house plant, we’re all for encouraging you to give coconut palms a shot—even pint-sized palms can be a great, summery addition to any home.
|Botanical name||Cocos nucifera|
|Common name||Coconut palm|
|Plant type||Tropical evergreen|
|Mature size||50–100 ft. tall, 20–40 ft. wide|
|Sun exposure||Full sun|
|Soil type||Sandy, loamy, well-drained|
|Soil pH||Neutral to acidic|
|Hardiness zones||10–12 (USDA)|
|Native area||Western pacific|
Coconut Palm Care
Native to tropical islands in the western pacific, the coconut palm is probably what comes to mind for many when you say the phrase “palm tree.” Once mature, coconut palms can reach a staggering height of up to 100 feet, and boast 10 to 20-foot palm fronds and a rotating collection of fresh coconuts. In their more juvenile form, however, they can be found in many local nurseries as sprouted coconuts with just one or two immature seedlings visible, and no stipe. They need lots of sunlight, heat, and water to thrive, which can often make them difficult to grow and frustrating for gardeners looking for immediate results.
Coconut palms thrive in full, bright sunlight. Even those found in nature can fail to proper if in the shade, so it’s extremely important that any indoor coconut palm receives ample sunshine. During the fall and winter months, consider placing your palm under a grow lamp or another artificial light source to help make up for the loss in sunlight. Additionally, depending on its placement in your home, you may have to move your plant’s location throughout the day to “chase” the sun and ensure proper exposure. As a good rule of thumb, you should aim for at least six hours of full sunlight each day.
Coconut palms are used to growing in a variety of soil conditions and are therefore not terribly picky about their planting mixture. That being said, a combination that closes mimics the coconut palm’s natural environment is always your best bet. Typically, this means mixing a neutral to acidic potting soil with a bit of sand or vermiculite to maintain a well-draining environment (you could also skip the sand and opt instead for a drier cactus mix). Additionally, you can add a few layers of mulch to the top of the soil to help it retain moisture. Be sure your pot is at least 12 inches deep to start, in order to provide plenty of soil for the palm to take root in. Once roots have sprouted, you’ll want to graduate it to a planter that holds at least 10 gallons of soil.
Like many tropicals, the coconut palm is one thirsty plant. Keep the soil consistently moist by saturating with warm water once to twice a week. As long as you’ve chosen a well-draining soil (see above), you really can’t overwater a coconut palm—after all, they’re used to between 40 and 60 inches of annual rainfall in their natural environments.
Temperature and Humidity
Keep your coconut palm nice and cozy at all times. It can survive in temperatures that are at least 70 degrees Fahrenheit and up (though they grow best in temperatures between 85 and 95 degrees Fahrenheit) and may fail to thrive if its surrounding climate dips below 64 degrees Fahrenheit. Humidity is an important factor, too—maintain a moist environment for your palm with the addition of an in-room humidifier, as well as frequent spritzing with warm water. Your plant may also benefit from the addition of a mini greenhouse while still in infancy (you can remove once the palm is approximately 12 inches tall).
Feed your palm year-round with a weak liquid fertilizer, and increase frequency during the summer months when it’s actively growing. Coconut palms are known to have several nutrient deficiencies, including a lack of phosphorus, nitrogen, manganese, and boron, so seek out a fertilizer blend specifically made for palm trees in order to supplement these losses.
Propagating Coconut Palm
If you can’t find a coconut palm at a nearby nursery or store, you can still grow one indoors using—you guessed it—a coconut. To sprout a coconut palm, start with a coconut that still has some of its husk on and sounds full of water when you shake it. Place it in a bucket of room temperature water and soak for up to three days to help jumpstart the germination process. Next, bury the nut in a moist but well-draining soil mixture, leaving the top half exposed above the soil. Move the pot to a warm, well-lit area and continually water it (without allowing it to sit in water) every three days or so. With the right environment, you should see a seedling appear through the shell of the coconut within three to six months.
Potting and Repotting Coconut Palm
Sprouted coconuts can be potted in three-gallon pots (about 12 inches of soil). Their root balls are fairly small and shallow to start and, as a result, they don’t need a ton of soil in the early growing months. However, once your coconut palm’s roots grow to be about six to eight inches long, repot the plant into a vessel that holds at least 10 gallons of soil.
Common Pests and Diseases
In their native habitats, coconut palms are fairly resistant to insect predators, but in the home, you might see mealybugs or spider mites on the leaves. Additionally, it’s common for coconut palms to be plagued by “lethal yellow,” a fungal disease that causes yellowing leaves, dropping fruit, and eventual death. While trees can be given antibiotics, such treatment is not always successful and most palms end up succumbing to the disease.
Bring the tropics to wherever you live with this comprehensive how-to guide for growing coconut palms indoors.
Growing Coconut Palms – How To Grow A Coconut Plant
If you have access to a fresh coconut, you might think that it would be fun to grow a coconut plant, and you would be right. Growing a coconut palm tree is easy and fun. Below, you will find the steps for planting coconuts and growing coconut palms from them.
Planting Coconut Trees
To start to grow a coconut plant, begin with a fresh coconut that still has the husk on it. When you shake it, it still should sound like it has water in it. Soak it in water for two to three days.
After the coconut has soaked, place it in a container filled with well-draining potting soil. It is best to mix in a little sand or vermiculite to make sure the soil you will be growing coconut trees in drains well. The container needs to be around 12 inches (30.5 cm.) deep to allow for the roots to grow properly. Plant the coconut point side down and leave one-third of the coconut above the soil.
After planting the coconut, move the container to a well lit, warm spot – the warmer the better. Coconuts do best in spots that are 70 degrees F. (21 C.) or warmer.
The trick to growing a coconut palm tree is to keep the coconut well watered during germination without letting it sit in overly wet soil. Water the coconut frequently, but make sure the container drains very well.
You should see the seedling appear in three to six months.
If you want to plant a coconut that has already sprouted, go ahead and plant it in well-draining soil so that the bottom two-thirds of the coconut is in the soil. Place in a warm area and water frequently.
Care of a Coconut Palm Tree
Once your coconut tree has started growing, you need to do a few things to help keep it healthy.
- First, water the coconut tree frequently. As long as the soil drains well, you really can’t water it too often. If you decide to repot your coconut tree, remember to add sand or vermiculite to the new soil to keep the water draining well.
- Second, growing coconut palms are heavy feeders that require regular, complete fertilizer. Look for a fertilizer that provides both the basic nutrients plus trace nutrients like boron, manganese, and magnesium.
- Third, coconut palms are very cold sensitive. If you live in an area that gets cold, your coconut plant will need to come inside for the winter. Provide supplemental light and keep it away from drafts. In the summer, grow it outdoors and make sure you place it in a very sunny and warm spot.
Coconut trees that are grown in containers tend to be short lived. They may only live for five to six years, but even though they are short lived, growing coconut trees is a fun project.
Growing a coconut palm tree is easy and fun. All you need is a coconut to get started. In the following article, you will find planting information for coconut palms and how to care for them.