The Q&A Archives: yellow leaves

Question: what is happening when the bottom leaves are turning yellow?

Answer: There are several possible causes for yellowing ranging from under to overwatering, under to overfertilizing and possibly pest or disease problems. If you are using a watering system, make sure it is watering evenly. Also inspect the plants carefully for insect feeding or other damage. If only the oldest leaves are yellowing, try feeding your plants a little nitrogen. Wish I had more suggestions!

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