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Hibiscus Plants

Q.I Have Perennial Hibiscus Planted Outdoors

Zone michigan | goblue added on September 23, 2012 | Answered

I have perrinial hibiscus I planted this spring. Can I leave them out this winter and should I wrap them with burlap, or do I have to bring them in for the winter? I have 8 of them and also live in Michigan north of Grand Rapids. Should I cut them down if left outside for the winter?

Help me and thank you,

Ann Wisniewski.

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on September 24, 2012

If it is a hardy hibiscus, then it can stay outside to Zone 5. If it is a tropical hibiscus, it must be brought in for the winter. The tropical varieties must be grown in containers and overwintered indoors.These plants will not tolerate more than a night or two of light freezes. Even one hard freeze (below 25) could kill the plant. The hardy varieties don't need any special treatment, though wrapping or mulching of the plant in colder zones is fine. If you are unsure of what you have, I would grow it in a container indoors just to be safe.

Here is more info: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/wintering-hibiscus-indoors-winter-care-for-hibiscus.htm

For hibiscus growing outdoors, I would not prune them back right now, as this will encourage new growth which could get damaged by the winter cold. These plants are best pruned back in spring. Here is more information: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/tips-for-pruning-hibiscus-plants-when-to-prune-hibiscus.htm

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