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Cut flowers1 variety
Bupleurum
Bupleurum rotundifoliumA classic filler for bouquets. Upright plants produce yellow-lime-green flowers atop long, wiry stems.
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Days to maturity
80–90 daysDays to germ.
14–21 daysHeight
24–36 inSun
Full Sun to Partial ShadeHow we grow it
Germination
- Days to germ.
- 14–21 d
- Soil temp
- 55–60 °F
Culture
- Days to maturity
- 80–90 d
- Height
- 24–36 in
- Sun
- Full Sun to Partial Shade
- Frost
- hardy
- Sow indoors
- Yes
- Outdoor / direct
- Yes
Harvest
- Cut stage
- Fresh - Flower heads begin to show color. Dried - Flowers completely open; hang to dry.
Timing · Zone 5a
JanFebMarAprMayJunJulAugSepOctNovDec
Sow indoorsApr 9 – Apr 23
Outdoor / directApr 23 – Jun 4
Bloom (from indoor)Jun 28 – Jul 23
Bloom (from outdoor)Jul 12 – Sep 3
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.
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Every Bupleurum sowingSeed sources, counts, ratings, and the observations kept against each one.Bupleurum trials