- You Will Get 500 Seeds Of Pink Rock Soapwort Saponaria Ocymoides Flower Seeds. - Description: - Name: Rock Soapwort. - Scientific Name: Saponaria Ocymoides. - Color: Pink. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 6 - 12". - Plant Spacing: 24 - 36". - Bloom Time: Spring. - Hardiness Zone: 2 – 10. - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Dry.