Fertilizing Lychee Trees for Better Fruit Set

A central Florida gardener asked when to fertilize a 4-year-old potted lychee tree covered in flower clusters, and how to encourage fruit production.

Timing and Fertilizer Choice

Apply the first fertilizer application once the tree buds. Choose a water-soluble fertilizer high in phosphorus (the middle number on the label), such as 10-20-10. Phosphorus promotes flowering and fruiting.

Application Tips

• Follow package directions for dilution and frequency.
• Ensure the tree receives full sun and consistent moisture.
• If unsure which product to buy, ask a garden center for a “bloom booster” or high-phosphorus formula.

With proper nutrition and care, your lychee should set a good crop. Monitor for pests and provide wind protection if needed.