Perennial plants with particularly firm flower-stalks.
The taller varieties are grown on a large scale for. The more compact forms make excellent border plants; they should be planted in fairly large .
The first species will grow in dry soil, but the more popularspicata prefers rich, damp soil.
The species are grown from; garden varieties are increased by division.
pycnostachya: Height 90-150 cm; vivid purple in mid summer to early autumn. Liatris spicata: Height 50 cm or more; flowering season late summer to early autumn. The purple-red flower spikes begin to open from the tip down – an unusual phenomenon. The popular garden form ‘Kobold’ has broader, short spikes , more purple blue in colour; it flowers a little earlier.