The Q&A Archives: Yellowing Leaves on Hibiscus

Question: I live in Phoenix, AZ. I have 2 hibiscus plants in pots. They both bloom well but have many yellow leaves. What can I do to
minimize the yellow leaves?

Answer: Hibiscus is evergreen in Phoenix but, as with all broadleaf evergreens, the oldest leaves are shed throughout the growing season. If the yellow leaves are the older ones, toward the center of the plant or farther back on the branches, it's normal and natural. If the yellowing leaves are the new growth, it indicates a water stress or a need for fertilizer. Plants in pots can need frequent watering, especially when the weather gets hot. And, plants in containers typically need to be fed more often than the same plants in the ground, but too much fertilizer can burn the roots of the plant. To avoid this, feed your hibiscus with a half strength dilution of a water soluable fertilizer (such as Peter's or Miracle Gro) every 3-4 weeks during the growing season. Best wishes with your hibiscus.

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