Physostegia virginiana 'Summer Snow'

Plant in full sun or partial shade in early to mid-winter in a moist but well drained soil.

Plant in full sun or partial shade in late spring, in a moist but well drained soil.

Fill a seed tray with seed compost, water and allow to drain. Sprinkle seeds over the surface allowing roughly 25mm space between seeds and cover with a thin layer of compost. Put tray in a clear polythene bag and place on a windowsill. When seedlings show remove plastic bag. When the second pair of leaves appear on the seedlings thin out to 50 mm spacing by removing the weakest looking plants. After 2 or 3 weeks and when danger of frost has passed plants can then be planted outside into required position.

Using a fork dig up plant in autumn, try to keep the root ball as complete as possible. Split the root ball at the centre with a sharp knife or a spade. Replant the plants to the same depth as the original and keep well watered until established.