- You Will Get 25 Seeds Of Dwarf Red Empress Nasturtium Tropaeolum Nanum Hummingbird Flower Seeds. - Description: - Name: Red Empress Nasturtium. - Other Common Names: Empress Of India / Dwarf Nasturtium. - Scientific Name: Tropaeolum Nanum. - Color: Crimson Red. - Plant Seeds: When Soil Temp Warms To 70f. - Bloom Time: Summer. - Hardiness Zone: Tender Perennial. - Plant Height: 12 - 15". - Plant Spacing: 9 - 12". - Light Requirements: Sun - Part Shade. - Soil & Water Preferences: Average.