Q.Can I Leave My Hibiscus (Several) Outdoors
I live in Concord, Ca. Very mild. . . Can I leave my hibiscus (several) outdoors if I cover overnight?
Certified GKH Gardening Expert
Hardy hibiscus plants need little care over winter and are hardy to zone 5 with no protection outdoors, though you may add mulch if you like. The tropical varieties are the ones that require growth indoors over winter. However, tropical varieties can be grown outdoors in zones 9 and above where winters are mild. I believe you are in zone 9b.