Recently Planted a Hibiscus
The leaves are turning yellow and falling off. We're in a very warm, dry climate. The plant in in a semi-shaded area. I've been watering it almost every day. Blooms okay.
Certified GKH Gardening Expert
This is common with these plants, and there are several reasons this can happen. This article explains many of them and will help you decide which is likely for your plant: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm
Since it was recently planted, it's most likely shock attributed to stress from acclimating to its new environment. This will oftentimes work itself out, but make sure that you keep giving the plant plenty of water.