Seeds for sale Onion (black onion), Chalcedon variety, 2011. purity 98%. The variety is medium-ripe. It takes 94-115 days from sowing seeds to mass lodging and yellowing of leaves. The bulb is round or oval, with a run down, dense. The average weight is 88-134 g, the taste is sharp. Moderately susceptible to powdery mildew and neck rot. The lightness of the variety is 96%. Yield depending on the region of cultivation 133-705 t/ha.