Training and Pruning: Rambutan trees exhibit strong apical dominance and have a tendency to produce long, upright growth. Early pruning and training to form an open center tree is recommended. Pruning of primary and lateral branches, including centrally growing branches, in the early stages of growth was a traditional practice in Malaysia and Thailand (Muchjajib, 1990). However, presently modified central leader system is now practiced in Thailand (Tindall, 1994). Light annual pruning of crossing branches, dead and diseased twigs and water shoots recommended for rambutan. After harvesting, fruited twigs are pruned back to stimulate new growth of up to 4 new side shoots, of which 22% of the shoots will bear fruit in the following season. Dead branches and water suckers should be removed regularly. Regenerative pruning of old trees with declining yield is also practiced when trees are about 20 years old (Buisson, 1986).

Weeding: Circular and inter-row weeding are carried out when necessary. More frequent rounds are done when trees are at immature stage. At any stage, do not use glyphosate herbicide near the drip line of rambutan, it could cause a severe yellowing and abscission of the lower leaves. Manual weeding is much preferred when trees are young.

Mulching: Mulching is essential during establishment and dry periods. No mulching should be applied prior to flowering.