Double Dwarf Sunflower Blumen Bag Seeds. Annual plant suitable for color spots and as a cut flower. Sowing Period: March - June Flowering period: June - September Sowing depth: 0.5 cm Transplant: the seedling must be transplanted when it reaches 15 cm in height. Transplant one plant to the other at a distance of 40 cm. Flower height: about 60 cm Blumen seeds are packaged with a 3 PAC barrier effect protection system (polythene-aluminum-paper) to preserve the high vitality and quality unaltered.