Select a site with full sun and well-drained soil for the Ranunculus. Add 3 to 4 inches of compost to the soil and work it into a depth of 12 inches.
Fill a bowl with warm water, about 80 to 85 degrees Fahrenheit. Soak the tubers in the water for two hours prior to planting.
Dig holes in your garden bed 2 inches deep and 4 to 6 inches apart.
Place the pointed end of the Ranunculus tubers into the hole and cover the holes with soil. Pat the soil down firmly. Plant the Ranunculus after the last frost date in your area.
Water the area around the Ranunculus tubers well for five to seven minutes.