Answer: You've pinpointed the most difficult part of growing gardenias: getting those buds to open. Gardenias are finicky, and any change of location or humidity or sun can set them back. I suspect the problem is only temporary, and due to the excessive rainfall. Too much water will wash away fertilizer, which is probably why the leaves are chlorotic. Continue to fertilize and you should see an improvement. Gardenias are also very susceptible to spider mites, which can distort the buds. Look on the undersides of the leaves for tiny black specks and whitish webbing. Routine misting with water also helps raise the humidity and control mites. I'm sure the ants vacated the area because of the overly wet conditions. They probably had nothing to do with the plant's performance. Hope your gardenia perks up soon.
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