Dianthus Seeds - Sweet William Single Mix


Dianthus barbutus

These brilliant little flowers have fringed petals of red, pink, purple or violet. Plants grow 8-18" tall and bloom the second year. Direct-seed or transplant after last frost. Prefer sun, but will tolerate partial shade. Long-lasting cut flower. Summer blooming. Biennial. (0.2 Gram Packet)
  • Planting Information
  • Growing Information
Average Seed / ozSeed / 100' RowAverage Yield / 100' RowDays to Harvest
10000n/an/a1-2 years
Planting SeasonIdeal Soil TempSunFrost Tolerance
After Last Frost70°FFull SunFrost Sensitive
Sowing MethodSeed DepthDirect Seed Spacing

Min. Seeds 

Per Packet

Transplant or Direct Seed1/16"2-4"120
Mature SpacingDays to SproutProduction CycleSeed Viability
6-10"5-10Perennial2-3 years

Site Selection


Dianthus is a biennial that prefers full sun to partial shade and rich, moist soil with good drainage.




Direct seed outdoors in late spring or sow indoors 4-6 weeks before the last frost and transplant outdoors once the danger of frost has passed. Optimal soil temperature for germination is 70°F. Sow seeds 1/16"'deep and 2-4" apart. Seeds will germinate in 5-10 days. Thin seedlings to 6-10" apart. If allowed to set seed, plants will return to your garden year after year.