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Hawaii Gardening

Gardenia yellowing leaves

16 years ago

Hello,

I have a relatively large gardenia in my yard. It's leaves are yellowing, but the veins remain green. I have given it magnesium rich fertilizer, but haven't seen any change over the past 3 weeks. I have read that the acidity of the soil might be a factor (too alkaline). Is that correct and if so how can I correct it.

Many thanks for your help.

Comment (1)

hisun
16 years ago
have you tested the ph of your soil? Gardenias love acidic soil. You can supplement the soil with sulfur, or use osmocote fertilizer. I just dump coffee grounds on my gardenias (tahitians and native Hawaiians) and they love it.
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