Meyer Lemon - Knowledgebase Question

San Jose, CA
Avatar for denisecarlqu
Question by denisecarlqu
May 18, 2006

I have a potted dwarf meyer lemon tree in my patio that has yellow leaves and flowers that are dropping off. I'm not sure what I am doing wrong or what is required to remedy the problem.

I'm hoping you can help.

Answer from NGA
May 18, 2006
Several things could be at play here. When young leaves (those near the end of shoots) turn yellow, we ususally consider an iron deficiency to be the cause. High pH, high phosphorous and of course low soil iron levels all can result in iron deficiency symptoms. If older leaves are yellowing, nitrogen may be deficient. However, with iron or nitrogen deficiency, the leaves usually do not fall from the plant. Root problems may also cause yellowing, dropping leaves. Root rot infection, physical damage to roots, drought and overwatering (soggy, waterlogged soil) can all cause leaves to turn yellow and fall. It can also cause blossom and early fruit drop. Try to determine which of the cultural problems listed above may be the cause and take steps to alleviate it. If a root rot disease is present, there may be little that you can do at this time other than to avoid overwatering which tends to make things worse. You may need to repot the tree in a potting soil that is rich and drains well. After that, give your tree consistent soil moisture, avoiding over and underwatering. In general, make sure your citrus trees get plenty of sunlight, and a regular fertilizer program of nitrogen. Use a fertilizer formulated for citrus, and follow the application instructions on the package. Water well before and after applying. Once your tree resumes healthy growing habits, it should produce fruit which will stay on the tree until maturity. Good luck with your citrus tree!

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