Description One of the oldest cultivated plants in the world, bottle gourd is a climbing plant which bears hard-shelled & bottle-shaped gourds as fruits. The dried & hollowed-out shell of one of these fruits, often used as a container, a drinking utensil, a musical instrument or a birdhouse. Bottle gourds is an annual vine having white flowers & smooth, large, hard-shelled gourds. Grown most often in warmer climates, this squash grows from 6 to 36 inches long & 3 to 12 inches in diameter. Sowing instruction. Season: Annual Height: 12 - 24 ft (4 - 8m) Bloom Season: VII - VIII Environment: Full sun to partial shade Soil Type: Moist, well-drained, pH 6.1 - 7.3 Temperature: 18 - 20 C (64-68 F) Average Germ Time: 10 - 14 days Depth: 1 inch Moisture: Keep seeds moist until germination Plant Spacing: 20 - 40 inches Sow: May Bottle Gourd - Squash 10 Seeds Cucurbita Pepo Birdhouse