How can I keep my Hibiscus alive outdoors during the winter in Georgia? What is your recommendation? They are too big to bring indoors.
Hibiscus Outdoors in Winter
Certified GKH Gardening Expert
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