Sweet William


Common Name: Sweet William

Scientific Name: Dianthus barbatus

USDA Hardiness Zones: 4 to 9 (Biennial)

Approximate number of seeds per gram (ounce) : 960 (17,000)

Sun: full sun, but partial shade is better in summer heat

Water: keep soil moderately moist during germination, do not overwater

Soil: cover lightly with 1/16 inch of well-drained soil

Temperature: 16 to 21 degrees Celsius (60 to 70 degrees Fahrenheit)

Spacing: 12 inches apart

Germination Time: 7 to 14 days


Native to Europe, Sweet William is a perennial that is typically grown as an biennial.  Blooms are clusters of white, pink, red and lavender.  Sweet William blooms best under cooler conditions.  It will readily self seed unless deadheaded.


Sweet William or Dianthus barbatus

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