How to Grow and Care for Anemone (Windflower)

Commonly known as windflowers, anemone is a collective label used for several different species in the Anemone genus. The Greek word "anemos" translates as "wind" They vary considerably in size, but all have basal leaf clumps from which long flower stems rise to support delicate flowers. They thrive in moist soil and full to partial sun in more temperate climates. The plants contain a substance called protoanemonin, which makes all parts of anemone plants moderately toxic to humans and mildly toxic to pets.

Anemone Care

Here are the main care requirements of anemones.

• Plant spring bloomers in the fall and fall bloomers in the spring.
• Place bulb-like corms in clusters (similar to daffodils) spaced about one inch apart and two inches deep.
• Give the plant at least four hours of sun each day.
• Use a well-drained soil that is relatively moist.
  

Light

Most species of anemones should be planted where they receive at least half a day of direct sunlight. Some varieties thrive more in partial shade, but they should still receive at least four hours of sun daily.

Soil

Plant anemones in moist, well-drained soil. Before planting, you can improve the soil by adding compost, leaf mold, or other organic matter. Anemones aren't fussy about soil pH, but will thrive in slightly acidic soil.

Water

Water the plants regularly when rainfall is less than one inch per week. Keep the soil lightly moist by watering slowly to allow the soil to absorb as much water as possible. Some varieties have special water needs; for example, wood anemone (A. nemorosa) dies to the ground in midsummer and does not need water until it regrows in fall.

Temperature and Humidity

Anemones like relatively cool temperatures. Most species do best with daytime temperatures are 58 to 65 degrees Fahrenheit and nighttime temperatures are 42 to 50 degrees. Gardeners in USDA hardiness zones 3 to 10 will be able to find at least one Anemone species that will thrive, but no single species can adapt to all zones. A. blanda and its cultivars are appropriate for zones 4 to 8, for example, while A. coronaria and its cultivars are able to grow in zones 7 to 10. Gardeners in cold-winter zones might choose to grow tender anemones as annuals, planting new corms each spring.

Anemones have no special humidity requirements provided they are receiving proper soil moisture.

Fertilizer

If desired, you can add bone meal to the soil in the fall for spring bloomers or in the spring for fall bloomers to give the plants a nutrient boost. No additional feeding is needed or recommended.

Types of Anemones

Several species of Anemone are available, each with several named cultivars to choose from. They include:

• Anemone blanda: Known as Grecian windflower, this plant adapts well outdoors. Some notable cultivars include 'Blue Star', 'Pink Charmer,' and 'White Splendour'.
• Anemone coronaria: This type has poppy-like blooms with black centers and are popular in floral arrangements. Sometimes known as poppy anemone, it's reliably hardy. Some recommended cultivars include 'Lord Lieutenant', 'Mount Everest', and 'Sylphide',
• Anemone hupehensisvar.japonica: Japanese anemone blooms abundantly from midsummerto late fall, giving gardeners a shade-loving alternative to the sun-drenched mums and asters of autumn. Some recommended cultivars: 'Bressingham Glow', 'Pocahontas', 'Praecox', and 'Pamina'.
• Anemone sylvestris:Sometimes known as snowdrop windflower, this plant is an early spring bloomer that does not have time to attain great heights; it belongs at the front of the border.

Pruning

The fading foliage of spring bloomers is usually insignificant enough to wither away unnoticed, so you will not need to prune it for a tidy-looking garden. Taller fall-blooming varieties might look shabby after the first frost, so shear off dead growth as part of your early winter clean-up tasks.

Propagating Anemones

Though the different species of anemones have different root structures, all can be propagated by digging up the corms/tubers, dividing them, then replanting. Lifting the roots in fall for winter storage is a good idea if your garden experiences wet soil over the winter. Here's how:

1. In the fall after the foliage has begun to die back, dig up the root clump or corms.
2. With corm-types, carefully break off any offset corms that have formed, discarding any that are decayed or soft. For those plants with rhizomatous roots, shake off most of the dirt, then divide the roots into segments, with each piece attached to a segment of crown.
3. Replant immediately or store the corms or roots in a cool dry place over winter for planting next spring.
4. If you have stored the roots over winter, it's a good idea to soak them in a bucket of water overnight to rehydrate them before planting. Unlike many bulbs that have a distinct shape that indicates how you should orient them in the planting hole, anemones corms/tubers are lumpy and irregular. They will grow properly no matter how you orient them in the ground.
   

How to Grow Anemones From Seed

Seed propagation of anemones is a slow, unpredictable method that is generally practiced only by serious amateurs or by professionals developing new cultivars by disciplined cross-pollination.

But if you want to try seed propagation, collect the seeds from dried seed heads left after the flowers fade, and sow them in an outdoor cold frame filled with loose, well-draining soil mix. Just barely cover the seeds. After they sprout, allow the seedlings to remain outside over winter under a thick layer of mulch, then transplant them individually the following spring.

If you wish to start the seeds indoors in pots or trays, the seeds will need a cold stratification period of three to four weeks before you sow them in a bright location to sprout.

Potting and Repotting Anemones

Not all Anemone species adapt well to growing in containers, but one that does is Anemone coronaria, of which there are many cultivars. Use a large pot filled with ordinary commercial potting soil blended with well-decayed compost. It's generally best to use a large 12- to 14-inch container. Corm-types should be spaced at least four inches apart; rhizomatous types should be planted one per pot.

Potted anemones do not adapt well to growing indoors, though they can be overwintered in an unheated greenhouse or another sheltered area where they can receive the necessary winter chill period. When the plant becomes root-bound (an issue only with the rhizomatous types), divide the root clump and replant.

Overwintering

Provided the species being grown is appropriate to your hardiness zone, no special winter protection is needed for anemones. Most gardeners simply trim off the flower stalks and foliage near ground level as part of the general winter cleanup work in the garden.

If you are growing a species that is borderline hardy for your region, a layer of mulch over the root crowns can protect the roots from winter kill.

Common Pests & Plant Diseases

Although there are no truly serious pest or disease problems with Anemone, they can be stricken with foliar nematodes that feed inside the leaves. These microscopic soil worms can cause distorted leaves and flowers through damage to the plant cells. Treatment is difficult, but removing plants and heating the soil through solarization sometimes gets rid of nematodes. All plant material in the afflicted area will need to be removed and disposed of. Periodically tilling up the soil and allowing it to bake in the sun might rid the area of nematodes.

A variety of fungal leaf spots, downy mildew, and powdery mildew can affect Anemones though the diseases are rarely serious.

How to Get Anemone to Bloom

This plant is most widely known for the beauty of its cut flowers which can last up to two weeks even after harvested. There are some things to keep in mind to get the most blooms from your anemone plant.

Bloom Months

Anemone blooms typically appear in spring, summer, and fall. They are fast-growing plants that will flower in their first season. The time of year to plant anemones is based on the blooming cycle of your chosen species. Plant spring bloomers in the fall, and fall bloomers in the spring.

How Long Does Anemone Bloom?

Anemone blooms are fairly long-lasting persisting as long as 10 days.

What does Anemone's Flowers Look and Smell Like?

Anemone flowers are cup-shaped and come in various shades of red, pink, blue, yellow, purple, and white. The species and variety will dictate the color. The flowers are usually simple single blossoms though some varieties do feature double flowers similar to a frilly, oversized mum.

These blooms have what many described as a woody and fruity aroma.

How to Encourage More Blooms

Most Anemone species bloom readily provided they are growing in moderately rich, moist soil. When plants stop blooming, it is usually because the roots have become overcrowded. Lifting and dividing the root clump or corms, then replanting, will usually return the plant to robust flowering.

A yearly application of bone meal blended into the soil can also provide the mild boost needed to support good flowering.

Caring for Anemone After it Blooms

There's not much maintenance needed on the plant once the blooms die back. With corm-types, leave the foliage in place until its foliage dies back naturally before removing it. If you're outside of optimal growing zones, take care to overwinter properly.

Deadheading Anemone Flowers

Anemone flowers don't necessarily require deadheading for new growth to occur but it can't hurt and will certainly make the plant more attractive.

Common Problems With Anemone

Anemones are relatively care-free flowers that are only subject to a few issues:

Flopping Flowers

It's generally desirable for anemones to sway in the wind, but some species can lose the ability to stand upright. Taller anemones might need to be staked to prevent them from flopping especially when they are not receiving enough sunlight.

Holes in Leaves

This can happen if snails or slugs come to visit. If these pests becomes a problem, small saucers of beer or snail/slug bait will do the trick.

Plants Die Out Over Winter

An unusually cold winter—or one that saw unexpected thaws followed by a hard refreeze—can cause some Anemone species to perish. There's no solution other than to repurchase and replant.

If this is an ongoing problem, you might consider digging up the corms or roots to store for the winter for yearly replanting in the spring.

From: thespruce