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Cut flowers1 variety
Sweet William
Dianthus barbatusBiennial or short-lived perennial with dense, fragrant flower clusters on sturdy stems.
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Days to germ.
7–14 daysSpacing
6–12 inHeight
20 inSun
Sun, Partial ShadeHow we grow it
Germination
- Days to germ.
- 7–14 d
- Depth
- 0.0625 in
Culture
- Spacing
- 6–12 in
- Height
- 20 in
- Sun
- Sun, Partial Shade
- Frost
- tender
Harvest
Timing · Zone 5a
JanFebMarAprMayJunJulAugSepOctNovDec
Sow indoorsApr 9
Outdoor / directMay 21 – Jun 18
Windows are anchored to an average last frost of May 21 (1 year in 10 as early as Apr 29, as late as Jun 2) and an average first frost of Sep 18 (1 year in 10 as early as Sep 6, as late as Oct 8). In a late or early year, slide them with it.
Compare in the calendarTrials
Every Sweet William sowingSeed sources, counts, ratings, and the observations kept against each one.Sweet William trials