The Q&A Archives: Yellow Leaves On Citrus

Question: My citrus trees (2 yrs old) and showing yellow leaves. My soil is very sandy, and we've had records rains this year. I have not fertilized, but have lots of good compost and aged cow manure. When should I fertilize?

Answer: Citrus trees are sensitive to too much water. They like moist soil, but not standing water, so your trees may be showing signs of stress from the record rainfall. If you amended your sandy soil with organic matter prior to planting, then the soil should drain quickly, yet retain just enough moisture to make the tree's roots happy. Use a 2-3 inch deep layer of compost or aged cow manure over the root zone, and replace - or add to it - about three times a year. Otherwise, use one pound of actual nitrogen per year, per tree, divided into about three applications: February, June and August.

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