Agrostemma
Corn Cockle
CARYOPHYLLACEAE


Annuals
Poisonous Seeds

Agrostemma. githago ocean pearls
© Thompson & Morgan

Agrostemma. githago pink pearls
© Thompson & Morgan

Agrostemma were at one time considered to be a weed, growing in cornfields, where its poisonous seeds would contaminate grain, however, these days this delightful annual brings summer colour to the domestic flower garden.

The white to plum-pink or purple flowers up to 3in (8cm) across are borne on slender down covered stems, which carry thin mid-green to grey-green leaves.

Corn Cockle is equally at home in the wildflower, butterfly, or cottage garden, where when mixed with other hardy annuals it helps to create a bright tapestry of colour.


   

Varieties: -

Agrostemma. coeli-rosa See: Silene. coeli-rosa



Agrostemma. githago

Form: Fast growing erect annual with thin stems.
Height: 2-3ft (60cm-1m)
Spread: 1ft (30cm)
Foliage: Having lance-shaped, mid-green leaves
Flowers: In mid-summer producing five-petalled, open, trumpet-shaped, pink flowers 3in (8cm) across.

Seeds are tiny, brown and poisonous   


Agrostemma. githago
'Ocean Pearl'


© Thompson & Morgan


Agrostemma. githago
'Pink Pearl'


© Thompson & Morgan


 

Cultivation: -

Grow in poor well-drained soil in full sun. Do not add fertilisers, for this will encourage sappy leafy growth at the expense of flowers.

Sow seeds in late autumn or early spring, directly where it is intended the plants should grow.

Given the lax nature of the plants, it is beneficial to partner them with more substantial plants that will support them

 

Propagation: -

Sow seed directly where the plant is required to grow

 

Fully Hardy

Pests & Diseases: -

 

 

 

 

This page was last updated on 12/03/2005

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