Rose Of Sharon is a perennial grown for its blooms, which open in spring and return year after year. It's hardy across USDA zones 5 through 8 and shrugs off deer. Its spring flowers are a moderate draw for honeybees, native bees, butterflies, and hummingbirds.
Rose Of Sharon — the short answer
Rose Of Sharon: grown in zones 5–8, part sun, pH 5–8.
- USDA zones
- 5–8
- Hardy to zone 5a — NC State Extension Gardener Plant Toolbox.
- Soil pH
- 5–8
- FAO ECOCROP
- Sun
- Part Sun
- Converted from FAO ECOCROP
- Frost-kill temp (growing season)
- 32°F
- FAO ECOCROP
Plant data: Growable Ground Plant Database, compiled from FAO ECOCROP, USDA PLANTS and university Extension sources — each tile names its own row's source, because per-field provenance varies.
Which pests actually threaten rose of sharon where you grow?
Japanese beetle is only documented in part of the country, so the answer depends on where you plant. Enter your location and we'll tell you which one reaches your land — and the move that beats it.
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What Rose Of Sharon is
Rose Of Sharon grows as a perennial and reaches around ten feet at maturity. It blooms in spring. It's also deer-resistant.
Bloom period: We haven't confirmed this against a published source yet.
How to grow Rose Of Sharon
Rose Of Sharon grows in USDA zones 5 through 8. Rose Of Sharon does best in part sun — at least 4 hours of direct sun a day — and soil from pH 5 to 8, on well-drained ground.
USDA Zones
5-8
Rated hardy to zone 5a by NC State Extension Gardener Plant Toolbox, checked Oct 2026. Ceiling: not verified.
Soil pH
5 - 8
FAO ECOCROP
Sun
Part Sun
Converted from FAO ECOCROP
Drainage
well (dry spells)
FAO ECOCROP
Frost Kill Temperature
32°F
Where cold starts killing growing tissue. Not a winter-survival floor — a dormant perennial takes far colder, which its hardiness zone answers.
FAO ECOCROP
Minimum Growing Temperature
51.8°F
Below this it stops growing rather than dies — a pace limit, not a survival limit.
FAO ECOCROP
Mature Height
10 ft
New Mexico Office of the State Engineer and NMSU (New Mexico conditions)
Start the season right
Plant rose of sharon in part sun with at least 4 hours of direct sun, once the soil has warmed and frost risk has passed. We haven't confirmed this against a published source yet.
Match the soil
Rose Of Sharon prefers pH 5 to 8 (FAO ECOCROP). A quick soil test from your local Extension lab tells you whether to add lime or sulfur to land in band.
Water steadily
Keep the root zone evenly moist through establishment. We haven't confirmed this against a published source yet. A 2–3 inch mulch layer holds moisture without waterlogging.
Harvest at its peak
Cut rose of sharon blooms in the cool of the morning, just as they open, for the longest display.
Where Rose Of Sharon thrives
Rose Of Sharon is hardy across USDA zones 5 through 8. Zone is only the starting point, though: the soil pH, drainage, and frost dates on your specific land decide how well it actually does.
A USDA zone is a 10°F band of average annual extreme winter minimum, so zones 5–8 spans average winter lows from -20°F to 20°F (USDA PHZM 2023). Across the 50 states and DC, that band covers 19 outright and splits 31 more down the middle — and which side of that line your land sits on changes the answer.
Zones 5–8·Where Rose Of Sharon growsOpen map →
This map is derived from the USDA ARS / PRISM Plant Hardiness Zone Map (2023) and is not the official USDA Plant Hardiness Zone Map.
Where Rose Of Sharon stands, state by state
Rose Of Sharon is rated for zones 5–8 — a cold floor USDA puts at -20 to -10°F. Across the 50 states and DC, 19 sit fully inside that band, the line runs through 31 more, and 1 sits outside it — and inside every split state, the same line runs on at county grain.
Fully inside zones 5–8
19 states
3 of 19 shown
The line runs through
31 states
3 of 31 shown
Rose Of Sharon’s band covers part of each of these states — which side of the line your county sits on changes the answer, and each state page draws it.
Outside zones 5–8
1 state
- North Dakota · zones 3b-4b
Winter cold is the limit here — the same plant often works in a container that comes under cover. Each link is that state’s own growing hub.
State zone extents: USDA Plant Hardiness Zone Map (PHZM) 2023. A zone is a 10°F band of average annual extreme minimum temperature, so a state that splits the band contains the boundary — its own page draws the county line, and a parcel report resolves which side your land sits on.
What grows around Rose Of Sharon
Growing guides for rose of sharon
Good to know
One caution for pet owners — rose of sharon is toxic to pets. Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: U.S. FDA Center for Veterinary Medicine, which lists the genus Hibiscus, not this species by name, as potentially dangerous to pets.)
Rose Of Sharon offers moderate value to bees and other pollinators. We haven't confirmed this against a published source yet.
Your land is one point inside Rose Of Sharon's range
This page resolves to the species. Your state page draws the county line, and a report reads the parcel — the soil pH, drainage, sun, and frost dates on your exact ground, which no species average can see.
See if Rose Of Sharon will thrive on your land
Zone averages are a start. Your soil pH, drainage, sun exposure, and frost dates shape whether rose of sharon actually takes. We score it against the mapped and modelled conditions at your address.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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How we know this about Rose Of Sharon
The figures above are cited per row, not per site: the pH band names this plant’s own source column, the three temperature figures each carry their own, and days-to-maturity cites the publication that actually lists it. All of it comes from the Growable Ground Plant Database — a compilation over FAO ECOCROP, USDA PLANTS, and university Extension sources, published openly with per-field provenance.
Grounded inUSDA PLANTS Database
Frequently asked questions
Can I grow Rose Of Sharon in my zone?
Rose Of Sharon grows in USDA hardiness zones 5 through 8 (Rated hardy to zone 5a by NC State Extension Gardener Plant Toolbox, checked Oct 2026. Ceiling: not verified.). Zone is one factor — soil pH, drainage, and frost dates on your specific parcel also shape whether it takes.
When should you plant Rose Of Sharon?
Most growers plant rose of sharon after the last spring frost, once the soil has warmed. Your local frost dates set the exact window — a Growable Ground report reads them for your address.
How much sun does Rose Of Sharon need?
Rose Of Sharon does well in partial sun — around 4 hours of direct sun, and it takes some afternoon shade in stride. We haven't confirmed this against a published source yet. That flexibility makes it a good match for a bed the house or a nearby tree shades for part of the day. A Growable Ground report maps how the sun actually falls on your land, hour by hour, so you can set it where the light lines up.
What soil does Rose Of Sharon need?
Rose Of Sharon prefers soil pH 5 to 8, on well-drained ground (FAO ECOCROP). Your report scores your parcel's mapped soil against that using USDA SSURGO data.
Does Rose Of Sharon attract pollinators?
Yes — rose of sharon's flowers are a solid nectar source for honeybees, native bees, butterflies, and hummingbirds. We haven't confirmed this against a published source yet.
Is Rose Of Sharon safe for pets?
Rose Of Sharon is toxic to pets. Keep it out of reach, and call ASPCA Animal Poison Control at (888) 426-4435 in an emergency. (Source: U.S. FDA Center for Veterinary Medicine, which lists the genus Hibiscus, not this species by name, as potentially dangerous to pets.)
Keep exploring Rose Of Sharon
Rose Of Sharon state by state
Every state rose of sharon's zone reaches — 41 link straight to that state's rose of sharon growing page; the rest open the state's full growing guide.