Ranunculus Flower Bulbs

Ranunculus are cool season flowers that grow best in spring-like temperatures of about 55°F. In warm climates (zones 8-10), the corms are planted in the fall so they will bloom in late winter and early spring. Plant ranunculus in beds and borders, cutting gardens and containers. They are good companions for other spring flowers such as primroses, pansies and larkspur. 

In climates where ranunculus are not winter hardy (zones 4-7), the corms are usually planted in late winter or very early spring for flowers in early summer. In these areas, home gardeners often grow ranunculus in containers rather than in the garden. Containers make it easier to control light and soil moisture.

Flower farmers and other commercial growers usually grow ranunculus in a greenhouse. To ensure flawless blossoms, it's important to carefully control air temperatures and well as the amount of light the plants receive. When ranunculus are grown in a greenhouse or under low tunnels, the bulbs are either planted in fall for flowers in late winter and early spring, or in late winter for flowers in spring and early summer.