- You Will Get 1000 Seeds Of White Sweet Alyssum Carpet Of Snow Lobularia Maritima Flower Seeds. - Description: - Name: Sweet Alyssum - Carpet Of Snow. - Other Common Names: Sweet Alison. - Scientific Name: Lobularia Maritima. - Color: White. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 3 - 6”. - Plant Spacing: 12 - 15”. - Bloom Time: All Summer. - Hardiness Zone: N/A (But Reseeds Itself Easily, So It Acts Like A Perennial In All Zones). - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.