- Name: Common Windmill Palm - Other Common Names: Windmill Palm / Chinese Windmill Palm / Chusan Palm - Scientific Name: Trachycarpus Fortunei - Color: Yellow Flowers / Dark Blue - Black Fruit - Plant Seeds: Outdoors After Frost / Indoors Weeks Before Last Frost - Plant Height: 10 - 12' + - Plant Spacing: 6' + / Containers - Bloom Time: Late Spring – Summer - Hardiness Zone: 7 - 11 / Houseplant - Light Requirements: Sun – Shade - Soil & Water Preferences: Average - Quantity: 5 Seeds