Durian trees in Luzon started to flower middle of last February 2012. The fruits will ripen in late May or June. More and more fruit tree farmers are planting durian in Luzon as they have proven it to be suited to many parts of the big island. Photo shows the clusters of unopened flowers of a hybrid durian from Malaysia which is grown at the Teresa Orchard & Nursery in Teresa, Rizal.
The Malaysian hybrid has small fruits (1.5 to 2 kilos) but is very fleshy and with excellent eating quality.
SOME TIPS: While the tree is in bloom, maintain sufficient moisture in the soil. Don’t apply nitrogenous fertilizer (urea) or the flowers will fall. When the flowers open, manually pollinate some of them. This is best done in the evening. Thin out some of the young fruits if there are too many in one cluster. You may spray Nevirol on the open flowers, a chemical that prevents the flowers and fruitlets from falling.