- You Will Get 25 Seeds Of White Cotton Gossypium Hirsutum Plant Seeds. - Description: - Name: White Cotton. - Scientific Name: Gossypium Hirsutum. - Color: White. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 24 - 36". - Plant Spacing: 15 - 18". - Bloom Time: Spring / Fall. - Hardiness Zone: 9 – 10. - Light Requirements: Sun. - Soil & Water Preferences: Average.