30 seeds per packet.
A rarely grown, clump-forming, perennial species in the Valerianaceae family that is native to the mountains of Japan. Wonderful, dense umbels of starry, white flowers are produced in July to September. A fantastic plant for insects.Height 90 cm. Sun to part shade in moist, well-drained soil.
Sow from March to June. Cover seed thinly, press in gently and keep top of compost from drying out. Keep pot warm at 15 to 20°C until germination, then move to somewhere cooler.
Carefully prick out seedlings when they have developed true leaves and are large enough to transplant to individual pots to grow on.