All guides
Cut flowers1 variety
Gilia
Gilia capitataWestern North American annual with round blue flower clusters that attract pollinators.

Days to maturity
60–70 daysDays to germ.
14–21 daysSpacing
6–12 inHeight
12–36 inSun
Sun, Partial ShadeHow we grow it
Germination
- Days to germ.
- 14–21 d
- Soil temp
- 55–70 °F
- Depth
- 0.125 in
- Light for germ
- light
- Pre-treatment
- 2-4 weeks of cold stratification can improve germination rates.
Culture
- Days to maturity
- 60–70 d
- Spacing
- 6–12 in
- Height
- 12–36 in
- Sun
- Sun, Partial Shade
- Frost
- Can withstand brief dips below freezing. · to 25°F · hardy
- Sow indoors
- No
- Outdoor / direct
- Yes
Harvest
Timing · Zone 5a
JanFebMarAprMayJunJulAugSepOctNovDec
Outdoor / directApr 23 – Jun 4
Bloom (from outdoor)Jun 21 – Aug 13
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 Gilia sowingSeed sources, counts, ratings, and the observations kept against each one.Gilia trials