Calendula is an annual flower that prefers cool growing weather but are tender and killed by frosts. Depending on variety and culture, the plants grow 12-30" in height and about as wide. The leaves are bright green and typically about 4" long. The lower leaves are oval with a rounded tip (spatulate) and upper leaves are lance shaped with pointed tips. The flowers are typically 2-3" in diameter and held on thick sturdy stems. Calendulas are single or double flowered and come in a range of colors from cream to light yellow to electric yellow to orange. Some have dark brown centers.