Also known as the Michaelmas daisy, this classic cottage garden perennial produces double, lavender-pink, daisy-like flowers with yellow centres. Flowering from August right through to October, Aster novi-belgii ' Rosa Perle' is incredibly valuable for late season colour, looking superb in patio containers, cottage gardens, wildlife gardens & prairie style borders. Asters are also attractive to bees & butterflies. Height & Spread: 50cm (20).