Camphor - (Cinnamomum camphora)

Succeeds in most soils but prefers a fertile sandy moisture-retentive well-drained soil in full sun or light part-day shade. Tolerates a pH in the range 4.3 to 8. Camphor is grown commercially in China and Japan as a medicinal tree and also for its essential oil. It is only hardy in the milder areas of Britain, though it can survive occasional lows down to about -10°c when fully dormant. The young growth in spring, even on mature plants, is frost-tender and so it is best to grow the plants in a position sheltered from the early morning sun. There are various large trees that are growing well in Cornwall. A very slow growing tree. The roots are very sensitive to disturbance. There are some named varieties, selected for their ornamental value.

Young shoots and leaves - cooked. Some caution is suggested because there is a report that the plant is poisonous in large quantities. The old leaves are dried and used as a spice.

Seed - the seed has a short viability and is best sown as soon as it is ripe in a greenhouse. Remove the fruit pulp since this can inhibit germination. Germination can take 1 - 6 months at 20°c. Stored seed should be sown as soon as possible in a warm greenhouse. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in a greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts. Consider giving them some protection from the cold for at least their first two winters outdoors. Cuttings of semi-ripe side shoots, 7cm with a heel, June/July in a frame with bottom heat.

Banks of streams in China, to elevations of 750 metres.


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