Garden Grape-hyacinth: Muscari aremeniacum - Flowers sky-blue to bright blue or blue-violet, ovoid, oblong or oblong-urceolate, about 1.3-1.5 times longer than wide. Racemes 20-40 flowered.
Common Grape-hyacinth, Grape Hyacinth: Muscari botryoides - Flowers sky-blue to bright blue, globose in shape, about as wide as long. Racemes 10-20 flowered.