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Diagnosing Yellowing Leaves on Citrus Cocktail Tree

A 2-year-old multi-graft citrus tree (Meyer lemon, lime, navel orange, grapefruit, honeybell) shows yellowing only on the honeybell scion despite vigorous growth and fruit set. Daily afternoon rains in Jacksonville, FL.

Nutrient Deficiency Pattern

Interveinal chlorosis (yellow tissue, green veins) on one graft suggests zinc or iron deficiency. Citrus commonly shows this when soil pH exceeds 7 or soils stay excessively wet—both plausible with daily downpours.

Targeted Solutions

Foliar sprays: Chelated zinc or iron formulations correct deficiencies quickly.
Soil management: Improve drainage if water pools. Test soil pH; amend if alkaline.
Graft-specific issues: Different rootstock/scion combinations vary in nutrient uptake efficiency—honeybell may be more sensitive.

Rain cannot be controlled, but container culture or raised beds improve drainage. Foliar feeding bypasses root uptake issues. Monitor new growth for greening response.

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