Striking Catherine Wheel Of A Dahlia. Its Flowers Are As Impressive As Its Name! Grow In Pots Or In The Ground And Turn Heads Of Guests To Your Garden.our Summer Bulbs Come In Easy to handle Packs So On Arrival From March To May They Are Ready To Be Planted In Containers Or In The Soil.plant Like Spring Bulbs To A Depth Of Three Times The Height Of The Bulb And Water Well.our Summer Bulbs Will Appreciate A Light And Well draining Soil And Most Will Appreciate A Sunny Position Unless Otherwise Stated.once They Flower You Can Cut Some For Vases Indoors. Just Invest In A Pair Of Secateurs Or Snips To Make Clean Stem Cuts.