Potted Lemon Tree's Leaves Turning Yellow - Knowledgebase Question

Charlestown, RI
Question by mglkoll
June 4, 2001
My potted ponderosa lemon tree's leaves are turning yellow. What should I feed it? Iron?


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Answer from NGA
June 4, 2001

0

Citrus are heavy nitrogen feeders. If the older bottom leaves are yellow, but new growth is green, it's usually a lack of nitrogen. If new leaves are yellow, with green veins, it's usually a lack of iron. (Lack of nitrogen is a more common problem than lack of iron.) Yellow leaves can also be caused by insufficient light, water-logged soil (plant roots need oxygen to thrive), dry soil, and shock from being moved from one environment to another.

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