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Hibiscus Plants

Q.hibiscus tree

Zone SARATOGA, CA | lee stone added on June 7, 2016 | Answered

I have a beautiful hibiscus tree that is probably 12 to 15 years old and doing well. However, the past two years the flowers have become less and less. Also, I noted more yellowish leaves (iron depletion?). I am not sure what to use to get this tree in better shape. The tree receives full sun and is watered 3 times a week now.

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Certified GKH Gardening Expert
Answered on June 9, 2016

Yellow leave can indicate that there is an iron issue, but I would think that overall the plant likely just needs some general fertilizer. If possible, have the soil at the base of the plant tested and then, if the test confirms a nutrient deficiency, add some balanced organic or chemical fertilizer to the soil as far out as the drip line of the plant.

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