Corylus cornuta californica
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Common Name: California Hazel
Corylus cornuta californica is a deciduous shrub that can grow up to 8.00 metres tall.
It is harvested from the wild for local use as a food and source of materials.
South-western N. America.
Damp slopes and banks below 2100 metres in California[
An easily grown plant, it succeeds in most soils, but is in general more productive of seeds when grown on soils of moderate fertility[
]. It does less well in rich heavy soils or poor ones[
]. Does well in a loamy soil[
]. Very suitable for an alkaline soil[
], but it dislikes very acid soils[
]. Plants are fairly wind tolerant[
Members of this genus bear transplanting well and can be easily moved even when relatively large[
Seed - raw or cooked[
]. Eaten fresh or preserved for winter use[
]. The seed ripens in mid to late autumn and will probably need to be protected from squirrels[
]. When kept in a cool place, and not shelled, the seed should store for at least 12 months[
An edible oil is obtained from the seed.
A fibre is obtained from the inner bark and is used to make paper[
]. The branches are removed in the autumn, the leaves removed and the branches steamed then the fibre is removed[
]. The fibres are cooked for two hours with lye and then put through a blender[
]. It makes a brown paper[
]. The fibre is also used for cordage[
Seed - best sown as soon as it is harvested in autumn in a cold frame[
]. Germinates in late winter or spring. Stored seed should be pre-soaked in warm water for 48 hours and then given 2 weeks warm followed by 3 - 4 months cold stratification[
]. Germinates in 1 - 6 months at 20°c[
]. When large enough to handle, prick the seedlings out into individual pots and grow them on in a cold frame or sheltered place outdoors for their first winter. Plant them out into their permanent positions in late spring or early summer[
Layering in autumn. Easy, it takes about 6 months[
Division of suckers in early spring. Very easy, they can be planted out straight into their permanent positions.