Cutting - hardwood, Seed
Best sown in a cold frame as soon as it is ripe and only just covered. Spring sown seed should also germinate successfully so long as it is not covered. The seed should germinate in the spring as the weather warms up. When large enough to handle, prick the seedlings out into individual pots.
Cuttings of mature wood, taken as soon as the leaves fall in autumn, outdoors in sandy soil.
Thrives on poor and dryish soils, even on chalk, but prefers to be near water. Prefers a heavy soil and a damp situation. Grows well in heavy clay soils. Tolerates very infertile sites. This species has a symbiotic relationship with certain soil micro-organisms, these form nodules on the roots of the plants and fix atmospheric nitrogen.