- You Will Get 200 Seeds Of Rose Mallow (Bush Mallow) Hibiscus Lavatera Trimestris Flower Seeds. - Description: - Name: Rose Mallow. - Other Common Names: Bush Mallow. - Scientific Name: Lavatera Trimestris. - Color: A Mix Of Pink, Red, & White. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 24 - 48". - Plant Spacing: 18 - 24". - Bloom Time: Early Summer – Fall. - 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.