hibiscus plant hasn’t bloomed
I've had a hibiscus plant for about 2 yrs and it was doing great. Then all of a sudden the leaves started wilting and falling off. It started to get a few new leaves but then they stopped growing. It hasn't bloomed in about 4 months. Please help me save my plant. I bring the plant inside for the winter and it usually does well and keeps blooming. But not in the last 4 months.
Let's start with an article on growing hibiscus in containers: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm
Yellowing and falling leaves, and no flowers, sound first like a watering problem -- is your plant getting enough water? Alternatively, roots that stay too wet could lead to root damage, and yellowing leaves.
After investigating watering, think about roots and soil. Is your plant severely root bound? That would prevent it from absorbing sufficient water. If you haven't repotted, you might try that, to give the roots more room, and to rejuvenate the soil. Here are a couple of article on this: https://www.gardeningknowhow.com/houseplants/hpgen/learn-more-about-repotting-houseplants.htm
Finally, consider minerals. Have you fertilized? If not, you need to - flowering takes a lot of energy. If you have fertilized often, you may have a salt build up. Running several gallons of water through the plant will rinse out the salt; repotting will also improve that situation.