Is it possible to bury a tropical hibiscus (as some suggest doing for roses in extremely cold areas) and have it survive? That is to say, if I set the tropical hibiscus in the ground sideways and covered it entirely with dirt, would it survive the cold weather (even with no light)? Have you ever done this before or heard of it being done successfully?
Bury Tropical Hibiscus for Winter?
Certified GKH Gardening Expert
Unfortunately, a tropical hibiscus plant will not survive winter outdoors, even if it's buried it will likely die, and must be brought inside. Only the hardy types can survive winters outside in your zone. This article will help: https://www.gardeningknowhow.com/ornamental/flowers/hibiscus/wintering-hibiscus-indoors-winter-care-for-hibiscus.htm