Sunlight. Because of their great humidity, roots are sensible to frost and need to be sheltered during winter.

Everyday, in the vegetative season. In winter let the soil be relatively dry to reduce the damages caused by the frost.

Every week during the first month of leave growing; later every fortnight, up to deep summer.

Every year, at the beginning of spring, just before the opening of the buds. Shorten the parts damaged by the frost to the oldest wooden roots: the new ones will form very rapidly. Use mould with a good drainage.

Shorten the growth to 1-2 leave buds. By mid-summer it is possible to trim completely the very strong specimens.

By seeds in high autumn, shelter from the frost. By semi-wood cuttings in deep summer. At the end of winter, you can plant wood cuttings in fine sand. By layers in spring.