- You Will Get 250 Seeds Of Red Burgundy Onion Allium Cepa Vegetable Seeds. - Description: - Name: Red Burgundy Onion. - Scientific Name: Allium Cepa. - Color: Red. - Plant Seeds: Fall / Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 6 - 12". - Plant Spacing: 12 - 18". - Harvest: 150 Days. - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.