Q.hibiscus not blooming
My hibiscus tree bloomed 2 summers in a row beautifully. Now it has grown more beautiful leaves but no buds. Any idea why? It is very healthy, yet does not even have one bud. Last summer many of the flowers fell off on their own and some I deadheaded. I never over water it and it gets plenty of sun. Last summer it was magnificent with so so many flowers.

There could be a few reasons.
Have you fertilized your plant?
They do need regular feeding.
Here is a few links to help you get your hibiscus blooming again.
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-fertilizing.htm
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm