When to Plant Anemone Corms: Timing for Spring and Summer Blooms

Anemones, cherished for their charming and vibrant flowers, belong to the buttercup family. These perennial plants are often referred to as windflowers, encompassing various species, including both spring and summer bloomers.

Though typically sold alongside popular fall-planted bulbs, anemones grow from corms. To determine when to plant anemone corms, it's essential to know which variety you're working with. These corms are usually available in fall or spring, and they will all flower in their initial season before going dormant. While some varieties are hardy enough to endure winter outdoors, others may require indoor protection against the cold.

Best Times for Planting Anemone Corms

When to plant anemone corms depends on the specific type and your local climate. It's crucial to plant them quickly after purchase to prevent drying out. Soaking the corms in lukewarm water before planting can help them rehydrate, whether you're putting them in the ground or planting in pots. Here's a breakdown of the best times for different anemone varieties.

Fall Planting for Anemones

Spring-blooming anemones typically flower from February to April and are best planted in the fall, specifically in September or October. Notable varieties to plant during this period include Anemone blanda, known as winter wildflower, and Anemone nemorosa, or wood anemone. These can be set outdoors, while Anemone coronaria can also be planted in pots indoors or outside in milder climates.

Interestingly, Anemone coronaria, or poppy anemone, can be planted at various times throughout the year, depending on when you want blooming. Planting them in fall and providing winter protection can force bulbs to bloom early in spring.

According to Lars Nyman, an experienced gardener, fall planting allows the corms to develop their root systems before winter's chill. He advises, "It's ideal to plant anemone corms at least 6-8 weeks before the first frost date in your area. If you wait too long, they might not establish properly before winter. In colder regions, planting as early as late summer may be necessary."

Explore the selection of spring-blooming anemones available

Spring Planting for Anemones

Summer-blooming anemones, such as Anemone coronaria, should be planted between April and June for blooms from June through September. These corms can go into the ground once the last frost has passed. For example, Anemone coronaria 'Bordeaux', available at Nature Hills, is a great choice.

If you missed the fall window, you can still plant anemones once the frosts have cleared and the soil is workable, which may vary from late winter to early spring depending on your US hardiness zone.

Optimal Locations for Anemone Corms

Now that you know when to plant, you might wonder about the best spots for anemone corms. This can vary. Types like Anemone nemorosa prefer dappled shade, while Anemone coronaria thrives in full sun and fits well in flower beds or container gardens.

Mike Lansing, managing editor of a gardening publication, notes that spring-blooming varieties are easy to cultivate, adding early spring color to bare trees and shrubs. He explains, "Anemones thrive in various outdoor settings and provide a stunning display. They prefer sunny or slightly shaded areas with rich, well-drained soil or quality compost."

Summer-blooming anemones should be placed in sunny, sheltered spots with free-draining soil. Avoid overly damp conditions, and consider winter protection by bringing them indoors or using a layer of mulch.

Common Questions

Should I soak anemone corms before planting?

Soaking anemone corms prior to planting is beneficial. Experts recommend soaking them for a few hours or overnight in lukewarm water to rehydrate, especially if they seem dry, as this aids germination.

Can I plant anemone corms in January?

It's possible to plant Anemone coronaria indoors in January to force blooms early. If your area is mild and free of frost, outdoor planting may also be feasible when the soil is workable.

Is September a good time to plant anemone corms?

September is an excellent month for planting anemone corms meant for spring blooms. They can be planted alongside other popular spring bulbs like daffodils and hyacinths.

If you're interested in forcing bulbs indoors to enjoy blooms during winter's dreariness, consider also growing hyacinths, daffodils, or irises alongside anemones.