Image Source: Myles Ritchie - The Outdoor Circle
"Subtropical dry to wet and tropical very dry to wet forest climates. Typically 0–700 m (0–2300 ft) with rainfall of 640–4290 mm (25–170 in). Growth rate: Moderately fast growing in favorable conditions, growing 0.5–1.5 m (1.6–5 ft) per year. Soil drainage: It requires free drainage. Soil acidity: It grows in lightly acidic to alkaline soils (pH 5–8). The tree prefers light and medium texture soils (sands, san- dy loams, loams, and sandy clay loams). Although the species is an indicator of stream courses, it favors well drained, moist soils. Kukui tolerates a modest amount of salt spray and is oc- occasionally found growing near the coast. It tolerates both steady and storm winds and makes a suit- able windbreak tree, especially in a multi-row windbreak. The tree can grow well even on relatively poor sites, pro- vided ample soil moisture is available, particularly during establishment.
Hundreds of flowers, small and ivory to white in color are hardly even noticed but the nut that develops is prized for its high oil content and its ability to burn for about 15 minutes giving it the nickname candlenut. Candlenut trees thrive in moist tropical regions. Considered highly ornamental it can reach 65 feet or more at maturity and have wide spreading branches.
At the nursery these trees are grown under 20-40% shade cloth. If you plant this tree in a brightly lit area you may experience leaf burn. It is best to acclimate this plant to its environment by keeping it outside and slowly moving it into a sunny area over a week or two to avoid stress before planting.'
Candlenut Trees enjoy a well drained, general potting mix easily found at your local box store. Remember try to stay away from arid or wet, mucky soils.
To help establish your new Candlenut Tree, fertilize sparingly ten inches away from the base, tri-annually with a slow time released product. Unfertilized they will tend to grow at a slower pace. Note: The heavy salts in cheaper fertilizers will damage the roots and possibly kill the plant. It's best to use a brand you know and trust."
Source: Craig R. Elevitch & Harley I. Manner (2006) (https://www.doc-developpement-durable.org/file/Arbres-Bois-de-Rapport-Reforestation/FICHES_ARBRES/Arbres-non-classes/Aleurites-kukui.pdf)