|Botanical Name||Philodendron bipinnatifidum, Thaumatophyllum bipinnatifidum|
|Common Name||Tree philodendron, lacy tree philodendron, Philodendron selloum, horsehead philodendron|
|Plant Type||Broadleaf evergreen|
|Mature Size||15 ft. tall outdoors, 10 ft. spread outdoors; 6 ft. tall indoors, 8 ft. spread indoors.|
|Sun Exposure||Part shade; avoid direct full sun|
|Soil Type||Loamy, moist but well-draining|
|Soil pH||Neutral, alkaline|
|Bloom Time||Spring, summer|
|Hardiness Zones||9 to 11|
|Native Area||South America|
|Toxicity||Toxic to humans and pets|
Tree Philodendron Care
If its common name is any indication, the Philodendron bipinnatifidum can grow very large depending on its environment. In its native habitat, this tropical plant can grow to 15 feet tall with leaves up to five feet long! When grown indoors, however, it reaches heights of between five to six feet tall with leaves that are two to three feet long.
Similar to many other types of philodendron, the tree philodendron is not fussy about its care and grows well indoors as a houseplant. If is provided with bright indirect sunlight and regular watering, it will thrive.
The tree philodendron does best in locations that receive dappled shade or medium to bright indirect light. Indoors, sunny windows filtered with a thin curtain or window blinds are ideal spots for a tree philodendron. As with most varieties of philodendron, the tree philodendron does not do well in low-light conditions. Lack of light can lead to stunted or leggy growth. The leaves of a tree philodendron reach towards the closest light source, so it is best to regularly rotate the plant to maintain symmetrical growth.
This member of the aroid family prefers soil that is moist but well-draining and high in organic matter. The tree philodendron doesn’t tolerate acidic or salty soil. To create your own growing medium, use a mixture of one part compost to make the soil more alkaline, one part perlite for drainage, and one part orchid bark or coco coir. Peat moss is too acidic.
Water your tree philodendron when the top two inches of the soil are dry. The soil should be consistently moist but never waterlogged. The tree philodendron does not tolerate drought and grows best with consistent watering. However, avoid overwatering at all costs because the tree philodendron is susceptible to root rot in overly wet soil.
Temperature and Humidity
The tree philodendron grows well in warm, humid environments. When grown indoors, average household temperature and humidity levels are usually sufficient for this tropical plant if it is not placed too close to a heating vent or drafty window. If you notice that the leaves of your plant are yellowing or developing crispy edges, this could be an indication that it needs more humidity and could benefit from a humidifier or pebble tray filled with water. Outdoors, the tree philodendron is cold hardy in USDA cold hardiness zones 9a through 11b.
Use a balanced fertilizer once a month throughout the growing season to encourage strong, healthy growth. To avoid fertilizer burn, stop fertilizing in the fall and winter months when the plant enters dormancy.
Propagating Tree Philodendron
The tree philodendron can be propagated through stem cuttings. Because these plants grow so large, trimming the stems might be necessary at some point to contain the size of the plant. Instead of throwing these cuttings into the trash, you can propagate them to create new plants.
To take a cutting, make a clean cut below a node on the stem. Each cutting should have 2-3 leaves and a couple of nodes on the stem. Place the fresh cutting in water and put it in a location that receives bright, indirect light. Change the water every week to keep it fresh. After a couple of weeks you should begin to see small roots forming. When the roots are between one to two inches long, move the cutting water into potting medium.
Common Pests and Diseases
These tropical plants are susceptible to a few common pests such as spider mites, fungus gnats, aphids, and mealybugs. Regularly inspecting the leaves for signs of pests is the best way to catch infestations early and eradicate them quickly.
Tree philodendrons are also susceptible to root rot, which occurs as a result of improper watering or compacted soil. Mushy stems and brown, dying leaves are both signs of root rot which can kill a plant quickly. If you catch root rot early enough, you might be able to save the plant by cutting off the rotted parts and propagating the remaining stem to grow a new root system.
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