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Buy Tweedia coerulea | Blue Milkweed | Sarah Raven
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Tweedia coerulea

There is no other plant with flowers this colour - true Verdigris; when copper oxidises to give this incredible, vibrant Aegean sea blue.
1

25 seeds

5 seedlings

10 seedlings

Delivery:

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sow Under Cover
Direct Sow/ Plant Out
Flowers/ Harvest

Details:

Type
Perennial (grown as an annual)
Position
Cutting Garden
Soil
Broad Tolerance
Flowers
July - October
Height
90cm (36in)
Group/Species
coerulea
Common name
Blue Milkweed
Moisture
Moist but Well-drained
Aspect
Full Sun
Spread
75cm (30in)
Cultivation
Sow indoors in spring; sow thinly and cover lightly, placing somewhere warm until seedlings emerge. Pot on and move to a cooler location. Harden off before planting outside after last frosts. Provide support and pinch out to promote bushiness.

Description

There is no other plant with flowers this colour – true Verdigris; when copper oxidises to give this incredible, vibrant Aegean sea blue.

Tweedia coerulea is an excellent small container plant, and cuts well (although not prolific), but most of all it’s an exceptional and unique border plant for a sheltered, sunny corner. If you over-winter, out of the frost, it flowers bigger and better from one year to the next. You have to grow it!

Care Tips

Only reliably hardy in the mildest of gardens, so grow as an annual or a conservatory perennial. Evergreen when kept above 5°C.