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Tropical Hibiscus
Hibiscus rosa-sinensis
Tropical Hibiscus blooms from June through October.
Mature size, hardiness zones, sun and the trait tags were checked against named botanical sources for this plant. The bloom months and water need on this page were not.
Growing Tropical Hibiscus
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 9–11. Expect it to reach about 4.9 ft tall and 3.3 ft wide at maturity, in roughly 2 years.
When to plant Tropical Hibiscus
Plant Tropical Hibiscus in early spring as soon as the soil is workable, or in early fall at least six weeks before your first frost, so roots establish in cool weather. For the middle of its hardy zones 9 to 11 range, spring means January to March and fall means October or November. Once settled, it blooms from June to October.
Month-by-month timing for your zone is on the planting calendar: for the middle of its range, start with zone 9 in January.
Comes in 11 varieties across 6 colors
Same plant, same care - pick the color you are growing.
Good to know about Tropical Hibiscus
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Worth knowing
Bud drop is a general stress signal, not one deficiency: it sheds buds from cold, heat, being moved, or swings between over- and under-watering. Keep conditions steady. per NC State
Overwinter indoors in cold zones
Anywhere colder than zone 9, grow it in a pot and bring it in before nights hit the mid-to-low 50s F; some leaf drop is normal. per University of Maryland
Not the hardy hibiscus
Nursery labels blur three plants: this frost-tender tropical, hardy Rose of Sharon, and hardy rose mallow. Check hardiness before planting in a cold zone. per Clemson
Each flower lasts a day
Each big, showy bloom opens for only about a day, but the plant flowers in flushes across spring, summer and fall, near year-round where it never frosts. per NC State
Draws hummingbirds, resists deer
The big nectar-rich flowers pull in hummingbirds, butterflies and other pollinators, and support a specialist mallow bee. Deer tend to leave it alone. per NC State
What pairs well with Tropical Hibiscus
Good companions share its growing conditions and add something it lacks: an earlier or later bloom, a lower carpet in front, or structure through winter.
Pansy
Takes full sun to part sun and moderate water; opens in early spring and overlaps into this one's season; low at 8 in, to carpet the ground beneath.
Echeveria
Shares full sun and low to moderate water; opens in late spring and overlaps into this one's season; low at 4 in, to carpet the ground beneath; echoes the pink.
Stock
Shares full sun and moderate water; opens in mid spring and overlaps into this one's season; lower at 1.6 ft, for the front of the border; echoes the pink.
Sweet Potato Vine
Shares full sun and moderate water; low at 8 in, to carpet the ground beneath; both offer pollinator forage.
Creeping Phlox
Shares full sun and low to moderate water; blooms in mid spring, before this one opens; low at 6 in, to carpet the ground beneath; both offer pollinator forage, in different months; they only overlap in zone 9.
Candytuft
Shares full sun and low to moderate water; blooms in mid spring, before this one opens; lower at 10 in, for the front of the border; evergreen, so the bed keeps its shape through winter; they only overlap in zone 9.
Rosemary
Shares full sun and low to moderate water; blooms in early spring, before this one opens; both offer pollinator forage, in different months; evergreen, so the bed keeps its shape through winter; they only overlap in zones 9 to 10.
Gardenia
Takes full sun to part sun and moderate to high water; opens in late spring and overlaps into this one's season; evergreen, so the bed keeps its shape through winter; a soft color beside the pink.
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