Hibiscus Leaves Are Yellowing
Have fertilized and water is automatic but leaves continue to yellow and fall off - even with fertilizer plants don't have deep green healthy looking leaves.
Certified GKH Gardening Expert
There are several things that can cause leaf yellowing in hibiscus. Thisx article will help you pinpoint the cause in yours: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm
This article should help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm