Chop them back to a foot from the ground. Feed them. Give them some water and wait for warmer weather.

I have a couple that look like that, too. I want to cut them back but every time I think about it, I see a flower bud. Also, mine probably don't get enough sun.

They look thirsty to me. How are they getting watered?

It's been really dry here with only a brief shower twice in the past month. I thought the yellowing leaves indicated a lack of water but being new here I didn't know if I should water them or if they were preparing for dormancy. Again, I am completely new to Florida gardening and don't understand the seasons here. I'll give them a good soaking.

Looks like they're going to get a haircut and a good watering and feeding!

Hibiscus is a plant with terminal flowers (at the end of the branch) so the more branches you have, the more flowers you will get. As they get leggy, you have to fight them back. Cut away.

Thanks to everyone for sharing your expertise. I will also follow your advice.

Marcia