Hibiscus bush lost leaves - Knowledgebase Question

phoenix, Ar
Question by jsouth5723
October 7, 2010
About 2 weeks ago my red Hibiscus bush lost all of its leaves. I was digging in the area and found several grub worms. How do I know if this is the problem and what should I do? I prefer organic pest control. Thank you! Jeff


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Answer from NGA
October 7, 2010

0

Grubs can feed on plant roots but their feeding doesn't usually cause all the leaves to drop from a hibiscus. Water or heat stress is the probable cause for the leaf drop. I'd prune the hibiscus back to encourage new growth and then water as usual. As for the grubs, they're near the soil surface at this time of year so cultivate the soil around your hibiscus to a depth of 3-4 inches and physically remove (and destroy) any grubs you might find. Good luck with your hibiscus.

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