- You will get 200+ Seeds of Red Burgundy Onion Garden Heirloom NON-GMO Vegetable Seeds. - Red Burgundy Onion Vegetable Seeds. - 200+ Seeds. - Days To Maturity: 120. - Planting Depth: 1/2". - Plant Spacing: 6". - Row Spacing: 16". - Plant Height: 20". - Plant In Full Sun After Chance Of Final Frost. - Sunlight: Full Sun. - Cultivating Difficulty: Moderate. - Watering: Medium.