Centaurea cyanus / Cornflower / British Wildflower / Seeds

(Code: BN_001)

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Centaurea cyanus / Cornflower / British Wildflower / Seeds

The Cornflower is a classic British wildflower and a great garden plant.  Plants form bright blue flowers on strong wiry stems from June to August.  Growing to about 60cm in height, these look great in a border, grown together in groups or dotted amongst other plants in a cottage or wildflower garden.  These are good cut flowers.


Centaurea likes full sun and a rich well drained soil.  Regular feeding and water will increase flowering.  Cornflowers have become rare in their natural habitat.  These seeds come from a cultivated source.

 

Pack of approx 300 seeds.  Sow in the autumn/winter for an early start, protecting the seedlings over winter in a coldframe or greenhouse, or sow directly in the soil in the spring.  Sowing instructions and a colour photo are printed on the packet.


See how your seeds are packed.

Hardiness Hardy annual (RHS Hardiness H6)
Flowers June to August
Height 30 - 60cm
Spread 20 - 30cm
Conditions  Grow in full sun and well drained soil
Sow

Sow in spring directly in the soil 1-2cm deep.  Or start earlier in autumn/winter in seed trays, with a covering of compost and keep at 15-20C.  Germination takes 10-14 days.  Protect young seedlings in a cold frame or greenhouse over winter and plant out in the spring.

Grow

Water regularly until young plants are established. Plants may need staking in more exposed gardens. Deadhead plants to prolong flowering.  Remove plants after they have finished flowering and sow more seed the following year.  Leave some seedheads on the plant if you want the plants to self-sow.