- You will get 50 Seeds of Multicolor Broom Corn Non-GMO Heirloom Vegetable Seeds. - Genus: Sorghum. - 50 Multicolor Broom Corn Seeds Non-GMO Heirloom. - (8-9’) Multicolor Broom Corn is a mixture of different broom corn. - Colors include, gold, red-bronze, purple, brown and natural. - These seeds form heads at the top of the plant (instead of a tassel) length 24-36”. 100-110 days.