hibiscus not blooming

Question

Have a 15 year old hibiscus plant that has bloomed every year except this year. The plant foliage is green and full. No sight of any buds. Please advise!! Thanks.

Answer 1

Likely to much Nitrogen in the soil. This can cause lots of lush leaves and no flowering.
Phosphorous is needed and Bone Meal is a great way to add this to the soil.

Here is a link with more information.

https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-fertilizing.htm
https://www.gardeningknowhow.com/garden-how-to/soil-fertilizers/bone-meal-fertilizer.htm