When Do Ranunculus Flowers Bloom. Ranunculus flowering season is usually from January till May though they can bloom for a month less or more. 04102017 Ranunculus are ground-hardy in warmer areas and can be planted in the autumn between October and November or in the spring when the danger of frost has passed.
In early spring gradually acclimate plants to outdoors by putting them out for more time each day bring them in at night. It is easiest to grow the bulbs in pots overwintering them in a greenhouse or cold frame and bringing them out in spring. Ranunculus normally starts to flower about 90 days after planting.
Once flowering begins you can expect to get flowers for 4 to 6 weeks.
31012021 The ranunculus will begin to bloom in the early spring right through to the beginning of summer. Include other plants that bloom in summer and fall in your cutting garden so you have plenty of flowers all season. They should be soaked in a shallow tray of water overnight before planting they will swell many times the size they were when dry. How to Grow Ranunculus.