If you live in an area above 9,000 feet (2,743 m), consider finding a different species of tree to plant.
Young Ohia trees and bushes that have not fully grown may prefer partial sun (about 6 hours of sun exposure a day), until they reach maturity. If your Ohia is in the ground, you won’t be able to change its sun exposure as it matures because it dislikes root disturbance. However, if the Ohia tree is in a planter, you can move the planter to keep the juvenile tree in partial sunlight.
You can purchase a planting soil mixture at your local hardware store, or at a local plant nursery or gardening center. Ask the sales staff for assistance, and request that they help you find a soil that drains well.
The seeds of the Ohia tree are tiny, and a cluster of them may look like a small pile of dust. These seeds grow in ¼-inch (0. 65 cm) pods on the Ohia tree. The seed pods burst open when they have matured, and allow the seeds to disperse.
Even if you’re unable to place the Ohia seeds in full sunlight, they’ll likely still grow. The seeds are tough and can grow in practically any light conditions. The seeds will grow best between 50°F and 93°F (10–34°C). If the outdoor temperatures dip below 50 or climb above 93, bring the plant indoors to more stable temperatures.
Take your cutting from the stem or branch tips of a mature Ohia tree. The cutting that you plant should be about 4-6 inches (10-15 cm) in length, and ¼-inch (0. 65 cm) in diameter. A cutting will take time to begin establishing its own roots: at least a week or two.
Ohia trees grow quickly, and will become root-bound if left in a pot for too long. Put the plant in soil in the ground as soon as it grows large enough to encourage healthy growth, or about 1 foot (0. 3 meters) tall.
While you’re digging, turn the soil by breaking apart clumps, removing rocks, and flipping the shovelfuls of soil upside down so that the organic material can be worked through the soil. For added soil drainage, place a couple of cinder blocks at the bottom of the hole to allow for soil drainage. You should be able to purchase cinder blocks at a local hardware or landscaping store.
Hours after watering, make sure that the soil is draining well. You should not see any puddles around the base of the Ohia tree, and the soil should be damp but not saturated.
If large numbers of bees or wasps are frequently in the tree, they may fly into your house if the tree is near an opening. [12] X Research source
Over the years, as the Ohia trees grow, you may decide to prune some of the trees’ branches. Prune using a pair of pruning shears, in cases where branches from two Ohia trees overlap.
