Bigleaf hydrangea Hydrangea 'Deep Purple Dance' Purple - Hardy plantReady to dance? Having this hydrangea 'Dance' (Hydrangea) in your garden or on your patio will make you want to get up and dance. Enjoy a full, purple bush for months. You can plant the hardy hydrangea all year round, provided temperatures have not dipped below freezing. The flowers bloom from summer to autumn. Pruning is not necessary, unless the bush becomes too large. The hydrangea loves partial shade. Keep the soil moist and give it extra water