hibiscus fertilizer - Knowledgebase Question

davie, Fl
Question by nislady
September 17, 2010
I'm using the wrong fertilizer. They need high postassium. Please tell me what to use. They are losing all their leaves.


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Answer from NGA
September 17, 2010

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Since you want to encourage flowering on your hibiscus you'll want a fertilizer that's low in nitrogen but high in phosphorus and potassium. That translates to a low first number on the fertilizer package (nitrogen) and higher second and third numbers (phosporous and potassium). A 5-10-10 is one such formula. This should be readily available in your local garden center. Overfeeding and/or overwatering can cause leaf drop in hibiscus so be sure you are watering deeply but infrequently and that you feed only once every 6-8 weeks. Best wishes with your hibiscus.

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