25 seeds 153059 £4.50 In stock
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When in stock, please allow 2-3 working days for delivery.
5 seedlings 511483-5 £6.95 Delivery early April
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When in stock, please allow up to 1 week for delivery.
10 seedlings 511483-10 £10.95 Delivery early April
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When in stock, please allow up to 1 week for delivery.
More Details

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!

Genus Tweedia
Group/Species coerulea
Type Tender Perennial (grown as a Half-Hardy Annual)
Common Name Blue Milkweed
Border Position Container, Front
Soil Type Acid, Alkaline, Chalky, Fertile, Neutral, Sandy
Scent Unscented
Site Full Sun, Sheltered
Moisture Moist but Well-drained, Well-drained
Height 1m (39in)
Spacing 75cm (30in)
Sowing, Seeds, Planting Sow indoors in spring; sprinkle seed 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. Only reliably hardy in the mildest of gardens, so grow as an annual or a conservatory perennial. Evergreen when kept above 5°C. Plants raised from seed flower quickly, only a few months from sowing.
Care Tips Left to grow naturally, plants are thinly branched, but frequent pinching out of the growing tip while young, produces bushier plants. Provide support for the climbing stems.
Flowering July - October
Vase Life Sear stem ends in boiling water for 10 seconds.
Harvesting Flower production: 3-4 months
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
Advice

We don't currently have additional advice on using / growing this particular product on our website, but if you do have a question that isn't answered on this page then please give us a call on 0345 092 0283 and we'll happily chat through any queries you may have, or email us on plantadvice@sarahraven.com (for advice on all things growing) or info@sarahraven.com for anything else.

Delivery

Plant Delivery - When in stock, please allow up to 1 week for delivery.

Seeds Delivery - When in stock, please allow 2-3 working days for delivery.

Next Day Delivery - Available for next day delivery if ordered before 12:30pm, Monday to Thursday. Applies to in stock seeds and hardware items only.

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