How to Prune Aster 'Cassandra'?
Deadhead spent flowers to tidy, cut back stem close to the ground in late autumn

Aster 'Cassandra' · Aster 'Cassandra'
Grow in moist but well-drained, moderately fertile soil in an open, sunny position. See aster cultivation
Deadhead spent flowers to tidy, cut back stem close to the ground in late autumn