Protecting a Rose of Sharon in the Winter?

I live in Toronto, Ontario, Canada; this is located in the ''Zone 5-B'', I believe. We have a cold winter with 3 to 4 major snowfalls, and a damp type of cold, being next to the north shore of Lake Ontario, in the Golden Horseshoe. The temperature will drop to an average of -25C to -35C (-13 to -31 F) between early January and late March. Should I pot the plant and bring it indoors? Or, is this tree accustomed to cold winter climates?

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November 4, 20190 found this helpful
Best Answer

The way to protect your plant is by mulching it really well during the winter months. Because this plant is a late bloomer it is not necessary to dig it up and bring it in the home. Do not prune the plant before winter becuase this can damage the plant during the winter months. The leaves should fall off in winter but will grow back again in late sprint. Just keep in mind it is a late bloomer and normally will get new leaves and blooms around mid-spring. Just mulch it well in late fall to protect the roots from the winter. Normally 2 to 4 inches of mulch is a good amount to protect the plant during the winer months.

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November 7, 20190 found this helpful
Best Answer

I believe Rose of Sharon and Hibiscus are generally considered to be in the same family but the Rose of Sharon is much more hardy than the Hibiscus and can be grown safely outdoors in Zone 5.

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Sites from Agriculture Agencies all recommend adding mulch - 2-4 inches - before first frost. But they also recommend using mulch all year long and just adding a little more before cold sets in.

I'm not in favor of potting plants that grow this large as they do not seem to do as well and also appear to get root bound fairly fast. Also, if the potted plant is left outside the pot can freeze and kill the roots so the pot would need to be protected.

Time of Pruning is critical or you may not have good crop of blooms the following year.

Check out these sites for specific instructions:

www.gardeningknowhow.com/.../rose-of-sharon-winter-care.htm

homeguides.sfgate.com/differences-between-rose-sharon-hibiscus...

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November 4, 20190 found this helpful

You can mulch it with dead leaves. You can also loosely cover it with burlap.

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November 5, 20190 found this helpful

Mulch and give it a little trim,by cutting back spent stems.This will give it a healthy start next season.

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November 5, 20190 found this helpful

I am outside of Pittsburgh which is not quite as cold as Toronto, but still we get nasty winters. I have had my rose of sharon plants for 15 years, they are in the ground and I have literally done nothing to them in the winter, every. The only thing I ever do is if there is a dead stalk/piece, I carefully remove it, but for a few years I didn't even get to do that, and they come up great every year!

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This year (which was their 15th anniversary) they came up the tallest and biggest flowers ever for some reason. I was amazed!! Every year they are gorgeous, but this year they were the most beautiful!

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