rose of sharon tree

Question

My tree is a mass of buds but some look like they are slightly brown, and don’t have any flowers yet. Why?

Answer 1

Bud drop is a very common problem with rose of sharon and other hibiscus species. This means the flower buds will turn brown and fall off before they open. Some level of bud drop is normal, but if all the buds are failing to open it could be that the plant is stressed by watering issues, heat, insects or disease.

These articles have more:

https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-flowers-hibiscus-blossoms-falling-off-plant.htm
https://hort.purdue.edu/ext/roseofsharon.html