Why are the hibiscus leaves turning yellow?
Temperature, light, the nutrients in the soil, the watering situation...it could be any of these factors. Use the process of elimination -- and the tips in this article -- to determine which of these could be causing your Hibiscus leaves to turn yellow:
What is this? It grows really fast and is taking over my flower bed.
This is a Chinese Hibiscus plant.
There are hundreds of varieties and yes, they can become invasive.
https://www.gardeningknowhow.com/ornamental/shrubs/rose-of-sharon/rose-of-sharon-bush.htm
Are the branches on my hibiscus supposed to twist around each other?
Some Hibiscus are trained with a braided trunk. This is done manually by the greenhouse and the plant does not naturally grow this way on their own.
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/braided-hibiscus-trees.htm
Something appears to be cutting the buds off my Hibiscus. I tried mixing dish detergent with water and spraying, didn't help. Bought a spray for flowering plants, didn't work.
This can be due to pests, specifically Thrips.
This article will help you.
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/hibiscus-flowers-hibiscus-blossoms-falling-off-plant.htm
I am in the process of saving a Hibiscus. A client where I work was going to throw this out, and I decided to try to save it. I cut the branches down to about 6 inches because there was some green showing near the bottom. I live in Arkansas and we have temps that can range from over 100 in the summer and down to 20 degrees in the winter. I currently have the plant outdoors because the soil was so wet. I think she watered this too much. Can you give me some guidance? I have no way of taking a picture at this time.
Trimming it back was a good idea because this helps with survival after transplanting. If you have not already transplanted the hibiscus, and wish to plant it in your yard, you can transplant in fall, as explained here:
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/transplanting-hibiscus.htm
If the hibiscus is not a hardy species, or if you don't know the species, you should use winter protection for the plant. Mulch over the roots to protect them, and consider protecting the branches (if they grow back by then) with burlap or a wire frame of leaves:
https://www.gardeningknowhow.com/garden-how-to/info/wrapping-plants-in-burlap.htm
How can I keep my Hibiscus alive outdoors during the winter in Georgia? What is your recommendation? They are too big to bring indoors.
You can certainly cut back the roots somewhat - this article has more information on root pruning: https://www.gardeningknowhow.com/houseplants/hpgen/prune-roots.htm
When root pruning, you should also cut back the foliage a proportionate amount. There are two approaches to overwintering indoors. 1., you can keep plant with foliage as a houseplant; 2., you can allow to go dormant and store in cool and dark place. This article has more information: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/wintering-hibiscus-indoors-winter-care-for-hibiscus.htm
How is Hibiscus grown and harvested? And where is it sold? How much?
There are many species of Hibiscus, and most are grown as ornamentals. GKH has many articles on caring for these plants, which you can find here:
https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/
There is a species called Hibiscus sabdariffa which is used in beverage production under the names "roselle" or "jamaica." The calyxes of the flowers are harvested and used for teas, beverages, and jellies. Here is our article on it:
https://www.gardeningknowhow.com/ornamental/flowers/roselle/roselle-flower-seeds.htm