organic black knapweed
$4.50
Centaurea nigra, Asteraceae
hardheads, black knapweed
Black knapweed is both food for bees and a beautiful flower to cut. This potentially invasive species is of European origin, naturalized in Quebec. It is a hardy perennial in zone 3, with erect stems that are covered with purplish-red flowers above fat, hairy involucres, from July to September. 30-75 cm tall.
70-80 seeds
Seeds certified organic by Québec Vrai,produced here at LA SOCIÉTÉ DES PLANTES, Kamouraska, Qc
In stock
Press seeds onto the surface of moist potting soil (no more than 2 mm deep) and store at 15°C-20°C until germination, which will take up to 15 days. Transplant the seedlings into individual 8 cm pots and, when well rooted, transplant at a minimum of 15 cm between plants.
| # of the lot for sale | SDP21 |
|---|---|
| Germination rate for 2025 of the lot on sale | 68% |
| Test germination conditions | Light, 15ºC to 18ºC |
| Number of seeds per bag | 75 |
You may also like...
-
organic phacelia
$4.50 - $14.75 Select options This product has multiple variants. The options may be chosen on the product page
Related products
-
organic columbine
$4.75 Read more -
organic Red Winter lettuce
$4.50 - $15.00 Select options This product has multiple variants. The options may be chosen on the product page -
Polish amaranth - organic
$4.50 Add to cart
