Double Yellow Tall Marigold Blumen Seeds in Envelope. Annual plant suitable for both high and low flowerbeds and borders. Sowing Period: March - May Flowering period: May - October Sowing depth: 0.5 cm Transplant: the seedling must be transplanted when it reaches 10 cm in height. Transplant one plant to the other at a distance of 20 cm. Flower height: 50 - 100 cm Blumen seeds are packaged with a 3 PAC barrier effect protection system (polythene-aluminum-paper) to preserve the high vitality and quality unaltered.