- Name: Japanese Red Rose - Other Common Names: Red Rugosa Rose / Red Rugrose Rose - Scientific Name: Rosa Rugosa Rubra - Color: Magenta - Plant Seeds: Fall Sow Seeds Or Cold Stratify - Bloom Time: Spring - Late Summer - Hardiness Zone: 2 - 9 - Plant Height: 6 - 9' - Plant Spacing: 4 - 6' - Light Requirements: Sun - Part Shade - Soil & Water Preferences: Average - Quantity: 30 Seeds - Other: The Red Japanese Rose Is Very Fragrant, & Is Commonly Uséd For Potpourri. The Large 3" Wide Single Blooms Flower In Very Showy Clusters, & Are Continuous Or Repeat Bloomers. Roses Make An Excellent Cut Flower And These Large Blooms Will Last For Up To 2 Weeks Once Cut. They Are Also A Popular Dried Flower. Red Japanese Roses Have Large Hips, & Often Bear Fruit & Flowers At The Same Time In The Late Summer & Fall. The Leaves Turn A Lovely Bright Yellow In The Fall For Fantastic Showy Color Combinations. Bees & Butterflies Will Enjoy Visiting The Flowers, & Birds Will Enjoy Eating The Rose Hips. These Shrubbing Roses Are Very Cold Hardy & Can Tolerate Temperatures As Low As – 50 Degrees F.