Purpureum' is an upright, clump-forming perennial to 1.8m, with finely divided foliage which is purple when young, later grey-green; flat heads of tiny yellow flowers appear in summer.
 
Grow in moist, fertile soil. Can be invasive if flowers are allowed to set seed. If grown with other foliage colour forms then they will readily hybridise, resulting in inferior plants.
 
No pruning required.
 
Foliage: Deciduous
Height: 1.5–2.5 metres in 2-5 years
Spread: 0.5–1 metres
The pictures in this listing are examples of the available plant at maturity and do not indicate anything in regards to size of plant at the point of sale
Organically produced young plant grown in a 9cm pot for planting immediately or to grow on (pot removed when possible, to reduce plastic waste)