A stunning dark purple pompon, Moor Place Dahlias produce a prolific display of the most charming cake pop style blooms. Dahlia plants actually bloom more when pruned, so by cutting stems down to the crease to make vase arrangements or even just to dead head, you can expect blooms from midsummer through fall. Plan for Moor Place Dahlia plants to reach up to 36 inches high with a 12- to 18-inch spread.