Dahlia Copper Boy Pompon dahlia Plant profile - Dahlia Copper Boy back to category view all profiles Variety Pompon dahlia Type Dahlia Growing Conditions Outdoors Plant Height 70cm-100cm Plant Spread 30-50cm Plant on/out After last frost (May) Sow Pot up tubers in March Harvest Flowers from July onwards Position Full sun, in ground is best but can be in pots Supplier Farmer Gracy