Wednesday, September 7, 2011

CISTUS

This genus is made up of around 20 species of resinous evergreen shrubs from the Mediterranean region and nearby Atlantic islands. Commonly known as rock roses, they have simple, gray-green to bright green, elliptical leaves, sometimes shallowly toothed. The foliage and young stems are often sticky to the touch and covered with fine downy hairs. Reminiscent of single roses, the flowers have 5 crepe-like petals and a central boss of goden stamens. They come in white or pink shades, sometimes with contrasting central blotches. The aromatic resin, known a gum labdanum, has a history dating back to Ancient Greek and Roman times and is still used as a fragrant binding agent by perfumers.


CULTIVATION


Although they are frost-tolerant, these temperate-climate plants are not suitable for harsh winter conditions. Situate in full sun with light, gritty, free-draining soil. While they are drought and heat resistant, rock roses flower better if well watered and fed. Propagate from cuttings or seed.


Top Tip


Tip prune young plants to encourage thicke growth. Established plants will remain tidy if they are given a light trim and old stems are removed.

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