- Name: Silver Drop Eucalyptus - Other Common Names: Cider Gum - Scientific Name: Eucalyptus Gunnii - Color: Silvery Blue Foliage / Creamy White Flowers - Plant Seeds: Indoors Weeks Before Last Frost / Outdoors After Danger Of Frost - Bloom Time: Spring - Hardiness Zone: 7 – 11 - Plant Height: 40' - Plant Spacing: 30 - 40' - Light Requirements: Sun - Soil & Water Preferences: Average - Quantity: 20 Seeds - Other: Silver Drop Is Primarily Grown For Its Foliage Which Is Prized By Florists And Is Also Commonly Uséd In Dried Arrangements. This Eucalyptus Has Silvery Blue Round Leaves With Reddish Brown Stems. It Is Fragrant And Evergreen, And Will Attract Bees, Birds, & Butterflies.