Top Questions About Hibiscus Plants

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Questions About Hibiscus Plants

Asked by
Anonymous on
November 29, 2010

Q. Can I Mulch Outdoor Hibiscus, Prune Them Back or Keep Them Dormant Until Warm Weather Returns?

I live in Northeastern Oklahoma and have several Hibiscuses growing outdoors. I would like to nurse them through the winter if possible.

Answered by
Nikki on
November 29, 2010
Certified Expert
A.

While overwintering indoors is always preferrable, especially for tropical varieties, one of the best ways to protect outdoor hibiscus that are planted in the ground is to mulch over the root zone and around the main stem of the plant. For additional protection (such as when extreme temps are expected), wrap the entire hibiscus in heavy frost cloth, tarp, or burlap. And yes, it definitely helps to prune back the plant but only AFTER winter, as the foliage will help insulate the plant. Here is an article that you may find helpful: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm

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Asked by
Anonymous on
November 29, 2010

Q. Hibiscus Leaves Turning Yellow and Falling Off

Hibiscus plant’s leaves are turning yellow and falling off. What should I do?

Answered by
Nikki on
November 29, 2010
Certified Expert
A.

This is a common issue with hibiscus plants. The following article should be of some help to you: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/answers-to-what-causes-hibiscus-leaves-turning-yellow.htm

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Asked by
BJ on
November 29, 2010
Answered by
Heather on
November 30, 2010
Certified Expert
A.

If it is a hardy hibiscus, than it needs no winter protection. If it is a tropical hibiscus, it is iffy if you can winter it outside in your area, but it is worth a shot. Mulch the roots heavily and wrap the plant in chicken wire (or something similar). Fill this with leaves or straw. Then wrap with burlap, leave the top open. Remove the wrap and mulch in early spring.

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Asked by
Anonymous on
November 30, 2010

Q. Hibiscus Wintering/Flowering/Feeding

Plant was outside all summer with many blooms and beautiful color. . . . now flowers have weak color. Do I need to fertilize? And if so, what do I feed it?

Answered by
Nikki on
November 30, 2010
Certified Expert
A.

The issue is probably more about how much sunlight the plant is getting. It can be very difficult in the winter to get a hibiscus enough sunlight to both grow and flower, particularly if you have brought it indoors. Winter sunlight is just not as strong as summer sunlight. I would recommend trying a plant light on it. That may help, but you still may have to wait for spring for the best blooms to return.

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Asked by
Anonymous on
November 30, 2010

Q. What Should I Feed Hibiscus in Winter?

What should I feed hibiscus now, early December? It is indoors and still flowers, but needs help. It has never been fertilized.

Answered by
Heather on
November 30, 2010
Certified Expert
A.

I would wait until spring to fertilize. No matter what you do in the winter, your hibiscus is going to look a bit ragged. They are not an indoor plant and being indoors is just good enough to get them to survive. If you give them fertilizer in the winter, it could be too much and could hurt them.

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Asked by
michelle on
December 1, 2010

Q. Black Around Leaves/Stems of Hibiscus

Why are the leaves and stems of my hibiscus turning black?

Answered by
Heather on
December 1, 2010
Certified Expert
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Asked by
Anonymous on
December 3, 2010

Q. Are Hibiscus Leaves Toxic?

I have an indoor hibiscus plant. Are the leaves toxic if eaten by an animal? I have a pot belly pig that I have had to pull away from the plant at least twice. I’m a little concerned if he gets a few leaves. I have to keep the plant inside because of winter cold.

Answered by
Heather on
December 5, 2010
Certified Expert
A.

It is hard to say for certain as applies to pigs, but hibiscus is not toxic to humans. Pigs are very close to humans from a biological standpoint (even at one time being used for heart transplants) so we suspect that the hibiscus would not be toxic to pigs either. But, just in case, keep an eye on him and try to keep him away from the plant.

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