- You Will Get 50 Seeds Of Climbing Hydrangea Anomala Petiolaris Vine Flower Seeds. - Description: - Name: Climbing Hydrangea. - Scientific Name: Hydrangea Anomala Petiolaris. - Color: Creamy White 6-10" Blooms. - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost. - Plant Height: 50 - 80 Foot Vine. - Plant Spacing: 36". - Bloom Time: Starting In June Or July Until Frost. - Hardiness Zone: 4 – 7. - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.