- Name: Amaranthus Perfecta - Other Common Names: Joseph’s Coat / Summer Poinsettia - Scientific Name: Amaranthus Tricolor - Color: Red, Yellow, & Green - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost - Bloom Time: Mid Summer - Early Fall - Hardiness Zone: 8 - 11 - Plant Height: 30 - 36” - Plant Spacing: 24 - 36” - Light Requirements: Sun - Part Shade - Soil & Water Preferences: Average - Quantity: 150 Seeds - Other: Perfecta Makes An Excellent Cut Flower!