A late flowering deep purple semi double flowers that attract pollinators. 'Purple Dome' has a more compact habit compared to other Asters standing at 18-24 inches tall. It maintains a nice mounded habit to fit in any garden. Profuse blooms will attract pollinators. Makes a nice cut flower. Prefers full sun to part shade and moist well drained soils. It can withstand occasional dry spells. Comes from Mt. Cuba Center in Delaware and apparently was first observed along Rt. 100 near Allentown.