A Very Stylish Dahlia . These Dahlias Will Be In Flower Until The Frosts To Give Plenty Of Flowers For The Border And To Fill Vases.plant The Tubers At Least 20cm8in Deep And 75cm30in Apart When There Is No Risk Of Frost And The Soil Has Warmed Up. When Stems Are Around 30cms1ft Tall Start Staking Them. Dahlias Will Grow In Almost Any Location