Nagami kumquat tree - discolored leaves

Jacksonville, FL(Zone 9a)

I have a young Nagami kumquat tree. Some leaves are discolored (see picture). Could this be caused by a nutrient deficiency or is it a disease? Thanks for any suggestions!

Thumbnail by violets22
Ellicott City, MD(Zone 7b)

I would say nutrient deficiency. When citrus leaves are yellowy like that it means they're deficient in certain minerals such as nitrogen and iron.

Jacksonville, FL(Zone 9a)

Thanks - I'll have to apply more fertilizer.

New Port Richey, FL

lack of water can cause leaves to yellow also. you can try some iron but i would not fertilize till spring unless you can keep it well protected over the winter. even a cold wind can burn new growth

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