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.
Zones
5-8
pH Range
5-8
Sun
Part Sun
Days to Maturity
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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.
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. It needs about 300 hours of winter chill, which is why climate matters as much as soil.
USDA Zones
5-8
USDA PHZM 2023
Soil pH
5 - 8
USDA PLANTS Database
Sun
Part Sun
Growable Ground plant catalog
Drainage
well (dry spells)
Growable Ground plant catalog
Frost Tolerance
51.8°F
The lowest temperature it shrugs off — below this, expect damage without cover.
Growable Ground plant catalog
Mature Height
10 ft
Growable Ground plant catalog
Chill Hours
300+
Winter hours below ~45°F it needs to fruit — too-mild winters can leave it bloom-shy.
Growable Ground plant catalog
Frost-Free Days
0+
The frost-free stretch it needs start to finish — short-season areas may need an indoor head start.
Growable Ground plant catalog
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.
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. 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.
Good to know
Good news for pet owners — rose of sharon isn't known to be toxic to dogs or cats. (Source: ASPCA.)
Rose Of Sharon offers moderate value to bees and other pollinators. (Source: Pollinator Partnership.)
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.
Zones 5–8·Where Rose Of Sharon growsOpen map →
On USDA hardiness-zone overlap, Rose Of Sharon can grow in these states:
See if Rose Of Sharon will thrive on your land
Zone averages are a start. Your exact soil pH, drainage, sun exposure, and frost dates shape whether rose of sharon actually takes — we score it against the real 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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Frequently Asked Questions
Can I grow Rose Of Sharon in my zone?
Rose Of Sharon grows in USDA hardiness zones 5 through 8 (USDA PHZM 2023). 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. 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 actual 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. (Source: Pollinator Partnership.)
Is Rose Of Sharon safe for pets?
Rose Of Sharon is not known to be toxic to dogs or cats based on available data. Always supervise pets around new plantings. (Source: ASPCA.)