Temps get below 32 F often during the winter months, but my plants are in the ground and I don't want to dig them up.
Hardy hibiscus can usually survive winter outdoors but in cooler regions will need additional protection, such as mulch and wrapping. Therefore, you don't need to dig it up. As long as you can give it added protection during extreme freezing conditions (and as long as you don't have the tropical type-which needs to be inside over winter), it should be ok.
How do I take care of hibiscus?
Thi article will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/how-to-care-for-hibiscus-plants.htm
Can I prune the hibiscus and put it in water to root so I can plant it?
Cuttings do not root well in just water. However, this article will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-propagation.htm
For pruning, here is more information: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm
We have a hibiscus plant that is about 3 years old. It is growing very well but it is also getting very tall. Can you trim hibiscus plants? If so, how and when is a good time to do so? Thank you Gordy
Spring is normally the time to do this but indoor plants may be trimmed up anytime. Here is more information: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm
I have sprayed them with bug killer and it helped for a while but now it's happening again. We live in FL and it's very warm and rains almost every day for a short time. I noticed the ends of all the leaves are turning yellow too. What can I do to help my hibiscus plants?
The overly wet conditions can contribute to the yellowing of the leaves. For additional suggestions, this article may help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm
As to the bud drop, this article may have some suggestions that can help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-flowers-hibiscus-blossoms-falling-off-plant.htm
I am interested in growing hibiscus outside in Seneca Lake area of New York State. The plants would be outside year round. Would this kill the bushes or would they survive the winter weather. Also, during the summer do the plants need full sun?
A hardy hibiscus plant will survive there but a tropical hibiscus will not. Hardy hibiscus plants need little care over winter and are hardy to zone 5 with no protection outdoors, though you may add mulch if you like. The tropical varieties are the ones that require growth indoors over winter. So look for a perennial, hardy hibiscus variety. Your local garden center or nursery should be able to help with this....and yes, they enjoy full sun outdoors.
If you would like to overwinter a tropical hibiscus, this article can tell you how to do so indoors: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/wintering-hibiscus-indoors-winter-care-for-hibiscus.htm
Can a Hibiscus plant be grown indoors only? Or does it have to be outside then brought inside?
Tropical varieties can be grown solely as houseplants, though many do enjoy spending summers outdoors in the fresh air. Hardy hibiscus can usually remain and survive winter outdoors but in cooler regions will need additional protection, such as mulch and wrapping. The tropical types MUST overwinter inside, however.