Answer: Your plant might just be going through a little transplant shock. If you can temporarily shade it from hot afternoon sunshine, it should recover. I've discovered in my own garden that the red flowering hibiscus will thrive in full sunshine but the yellow and orange flowered cultivars are a little less tolerant, even though the plant tag recommends full sunshine. Yours might be just fine once it is established but it is something to consider if it continues to decline. Hibiscus should be watered deeply once or twice a week in hot weather. I know our immediate reaction to wilting plants is to give them water, but that's not always the best thing to do. Overly wet soils can actually suffocate the roots of your plant. So water deeply then wait 3-4 days and dig down into the soil a few inches. If the soil is damp 2 inches beneath the surface, your plant won't need to be watered. If it is on the dry side, go ahead and water. Hope this information is helpful.
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