Looking for a ground cover that has double purple flowers and brilliant red fall color? Look no further than the Birch Double Hardy Cransebill! Dainty deep blue/purple flowers adorn this mat forming ground cover type plant that is great for beds, borders and rock gardens. Blooms begin on the Birch Double Cransebill in late spring and continue sporadically throughout the summer until fall. After first flush of flowers has faded shear the entire plant back 3/4 of the way to promote another flush of blooms!