The Q&A Archives: Fertilizing Citrus

Question: When, how, and with what should I fertilize grapefruit, orange, and lemon trees?

Answer: As a general rule of thumb, bearing trees should be fertilized 3 times per year with an 8-8-8 (or similar) fertilizer. The amount applied is gradually increased about one pound per year up to a maximum of 8 pounds. This would mean that a fully grown tree would be receiving approximately 24 pounds of fertilizer in 3 separate 8 pound applications. Tree condition should be used as a guide to rates of applied material with noticeably deficient trees receiving more material and luxuriant, vegetative trees receiving less. The recommended applications can be made in January - February, May - June and October - November, although timing is not especially critical.

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