How Often Do I Water Canna Lily Plant?
Canna lilies are coarse perennials with thick underground roots. The actual flowers grow up through a thick and tightly furled base of leaves, and come in all colors except black, green and blue. Canna lilies are very resilient against harsh winter weathers, but they need to be planted in rich soil with good drainage. They need plenty of moisture and humidity, and should be watered twice a week unless the temperature rises above 85 degrees Fahrenheit.