Troubleshooting
Duku problems — and how to fix them
Duku (Lansium domesticum) is generally forgiving once you match its basics, but a few issues come up again and again. Here is what each one looks like, why it happens, and the fix.
Failure to flower
Most common issue in continuously wet/humid cultivation; requires a distinct 2–4-month dry period and slight temperature drop to initiate flowering.
Very slow growth
Grafted plants fruit in 5–10 years; seedlings can take 12–20 years — manage expectations.
Root rot
Occurs in poorly drained or waterlogged soils; improve drainage and avoid overwatering.
Leaf chlorosis
Yellowing may indicate iron or magnesium deficiency; apply chelated micronutrients and maintain acidic soil pH.
Fruit borer
Larvae of moth species damage developing fruit clusters; use pheromone traps and targeted insecticide at first signs.
Prevent duku problems before they start
Most duku issues are care-mismatch, not bad luck. Dial in the basics:
Duku problems — FAQ
Why is my duku failure to flower?
Most common issue in continuously wet/humid cultivation; requires a distinct 2–4-month dry period and slight temperature drop to initiate flowering.
Why is my duku very slow growth?
Grafted plants fruit in 5–10 years; seedlings can take 12–20 years — manage expectations.
Why is my duku root rot?
Occurs in poorly drained or waterlogged soils; improve drainage and avoid overwatering.
Why is my duku leaf chlorosis?
Yellowing may indicate iron or magnesium deficiency; apply chelated micronutrients and maintain acidic soil pH.
Why is my duku fruit borer?
Larvae of moth species damage developing fruit clusters; use pheromone traps and targeted insecticide at first signs.