Q.My Tradewinds Hibiscus In A Pot Gets Lots Of Buds, But The Buds Die Before Opening – Why
The hibiscus flowers about every 10 days. It is on a watering drip system that I keep an eye on so it doesn’t get too soaked. It gets at least 6 hours of sun each day.
Certified GKH Gardening Expert
It may not get enough direct light. Hibiscus grown in these conditions will exhibit nice green growth, but few flowers that make it to opening. Being right on the lower end of the light duration for the day, I would expect it to suffer just a little.
Other than that, you could test your soil for nutrient imbalances. This could be highly likely, as well. Testing your soil will confirm:
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/testing-soil.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/soil-ph-plants.htm
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/light-requirements-for-hibiscus.htm