Japanese aster is a clump forming perennial with broad lance shaped, toothed, dark green leaves and daisy like lilac blue, yellow centred flowers, on tall upright stems which rarely require staking. It is very hardy and good as a cut flower. 
▪️ Height 150cm
▪️ Width 50 cm
▪️ Flowers in Autumn
▪️ Full sun to part shade
▪️ Drought tolerant once established.