yardremake
A mature Sweet William (Dianthus barbatus) growing in a residential garden bed

In the landscape

Border · Mass planting · Meadow · Patio · Rock wall · Slope · Small space · Walkway

Data sources

Missouri Botanical Garden, NC State Extension

Sweet William

Dianthus barbatus · Perennial

Sweet William is a moderate-growing perennial, hardy in USDA zones 3-9, that matures to about 1–2 ft × 6–12 in. It does best in full sun and part shade with medium water needs in well-drained and moist soil. Expect pink, purple and red blooms in spring. It attracts bees, butterflies and hummingbirds, stands up well to deer, heat and humidity and grows happily in containers.

USDA zones
3-9
Sun
Full sun, Part shade
Water
Medium
Mature size
1–2 ft × 6–12 in
Growth rate
Medium
Maintenance
Medium
Soil
Well-drained, Moist
Bloom color
Pink, Purple, Red, Variegated, White
Bloom season
Spring
Attracts
Bees, Butterflies, Hummingbirds, Moths, Songbirds
Tough against
Deer, Heat, Humidity, Rabbits
Toxic to
People
Native to
Western Asia, eastern Europe, Korea

Will it survive your winters?

We score Sweet William’s freeze-trouble range against the real coldest nights your area has recorded.

Powered by ~35 years of daily lows from the nearest NOAA weather station. A risk read, not a guarantee — a sheltered spot or mature plant beats the odds.

More plants for your zone: Zone 3 · Zone 4 · Zone 5 · Zone 6 · Zone 7 · Zone 8 · Zone 9

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