Soak anemone corms in tepid water for 3-4 hours prior to planting. As the corms soak, they will begin to plump. Don’t over soak the corms, or they could rot. In Zones 4 and above, they can be planted throughout the spring. In Zones 2 and 3, anemone should be planted outside after all danger of frost has passed. For an earlier start, plant the bulbs indoors in a pot using a standard potting soil. Water well and keep the pot in a sunny window. Place outdoors after the danger of frost has passed. Plant bulbs with the rounded side facing upwards (pointed end down). Starting the anemone indoors could mean the plants bloom a few weeks early.
Plant bulbs 2 inches below the soil surface and space them approximately 4-6 inches apart.
Anemone prefer a rich, well-drained soil. Amend the soil with a thick layer of composted organic matter dug in to the top 6-8 inches of ground.
Plant in full sun, or in regions with hot summers, plant in partial shade.
For best results, fertilize monthly with an all-purpose fertilizer.
Anemone blooms have a very long vase life. Harvest the flowers as soon as the buds break. Add floral food to the vase water. Keep the plants dead-headed to maximize the bloom time.
End of Season Care
In Zones 7 and above, leave anemone in the ground and cover with a protective layer of mulch. Leave the foliage on the plants to help nourish the bulbs. In Zones 6 and below, dig the bulbs before the first frost and let them air dry for several days. Store bulbs in peat moss in a cool, dry location. If you are unsure about overwintering the corms in the ground, the safe bet is to dig them up and store them until spring.