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Cut flowers1 variety
Cup-and-Saucer Vine
Cobaea scandensFast-growing tender vine grown as an annual for large cup-and-saucer flowers and hummingbird appeal.
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Days to maturity
120–150 daysDays to germ.
15–21 daysSpacing
12 inHeight
120–240 inSun
SunHow we grow it
Germination
- Days to germ.
- 15–21 d
- Depth
- 0.5 in
Culture
- Days to maturity
- 120–150 d
- Spacing
- 12 in
- Height
- 120–240 in
- Sun
- Sun
- 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 Cup-and-Saucer Vine sowingSeed sources, counts, ratings, and the observations kept against each one.Cup-and-Saucer Vine trials