Bulb · Ranunculaceae
Poppy Anemone
Anemone coronaria
Soak the corms, hand them sun and free drainage, and poppy anemones will fill your spring with jewel colors.
Full sun
Every 5–7 days
84–120 days
USDA 7–10
Overview
If you are new to bulbs, poppy anemones are a lovely place to begin. Their cup-shaped blooms come in red, blue, purple, pink, and white, and they grow from little knobby corms instead of seed, which takes a lot of the guesswork out for you. They belong to the buttercup family, kin to ranunculus, and each flower rides a slim stem above soft ferny leaves, so they look as charming in the garden as they do in a vase.
Do not worry too much about getting everything perfect. These plants are perennial in mild ground but short-lived, hardy only in zones 7 to 10, so many gardeners simply grow them as annuals or lift the corms and start fresh next year. That means your choice of when to plant just follows where you live: set corms out in fall in mild zones, or wait for early spring where winters bite hard.
A little care at the start pays off, and the rest is forgiving. Soak the corms, give them full sun and quick-draining soil, and you will enjoy a long stretch of flowers from April into June. The one mistake worth avoiding is leaving them in soggy ground, since wet feet are what make the corms rot, but with decent drainage you are well on your way.
Care
The short version: give them full sun to a touch of shade, rich soil that drains quickly, and steady moisture while they grow. Soak the corms before planting, and once the leaves fade just ease back on water so the corm can rest comfortably.
Light
Anemones bloom their best in full sun, though they will happily take partial sun or light shade too. Aim to give them at least 6 hours of direct light a day, because in too much shade they trade flowers for leaves and you miss the show.
Water
Keep the soil evenly moist while the plant is actively growing from fall through spring, watering every 5 to 7 days as the top dries out. Once the blooms fade and the foliage dies back, simply ease off and let the corm rest dry, since soggy ground during dormancy is the thing that rots it.
Soil
Plant in rich, sandy, well-drained loam that you have worked over with some organic matter. They are relaxed about pH and content anywhere from 6.0 to 8.0, so the only part they really insist on is sharp drainage.
Temperature
These are cool-season growers that take a wide temperature swing in stride, from about 10°F to 75°F (-12°C to 24°C). They shrug off frost within their hardy range but slow right down in true summer heat, which is simply their signal to go dormant.
Humidity
Ordinary outdoor air suits them just fine, so there is no number you need to chase. Good airflow matters far more than any humidity reading and helps keep the leaves healthy and clean.
Feeding
Mix a balanced fertilizer or compost into the soil at planting time, then feed once more during active growth in spring. Rich, organic ground does most of the heavy lifting, so you never need to push them hard.
Pruning
Snip away spent flowers to keep things tidy and coax along more blooms. After flowering, just leave the foliage be and let it yellow and die back on its own, because that is exactly how the corm builds up energy for next year.
Repotting
Lift and divide crowded clumps every 2 to 3 years to keep them lively, or grow them as annuals and pop in fresh corms each fall or early spring. If you notice fewer flowers and small, crowded corms, that is just the clump letting you know it has outgrown its spot.
Size & spacing
9–18 in (23–46 cm) tall
When to plant
Anemones keep a cool-season rhythm, growing through fall and winter and flowering come spring. If your winters stay mild, tuck the corms in during fall; where it turns cold, wait for early spring. Either way, you can look forward to blooms from April into June.
Northern hemisphere
Southern hemisphere
Typical months for a temperate climate: start earlier in warm zones, later where spring frosts linger.
- Sow: Start corms in pots in fall for overwintering in a cool, frost-free space (e.g., cold frame or sunporch); set out in early spring
- Plant: Plant soaked corms 2-3 inches deep and 4-6 inches apart in fall in mild zones, or in early spring in colder zones
- Harvest: Spring bloom, April to June (or roughly 3 months after spring planting)
Hardiness
USDA hardiness zones: 7–10
Temperature: down to -18°C
Troubleshooting
Happily, anemones come with few pests or diseases, so most hiccups trace back to water and light rather than bugs. If you keep a gentle eye on the corms, the flowers, and the fading leaves, you can usually catch and correct the cause early. Find the symptom that matches yours below, then take it from there.
Corms turn soft and rot before they sprout
More often than not, corm rot is down to wet feet, setting in when the soil stays soggy or the corms sit too deep in heavy ground, and a lifted corm will feel mushy or look moldy. Do not let it discourage you. Dig out anything soft, work some sand and compost into the bed, and replant the firm ones at the right 2 to 3 inch depth.
Fix:
- Improve drainage by amending soil with sand and organic matter
- Lift and discard rotted corms
- Replant healthy corms at the correct 2-3 inch depth in well-drained soil
Lots of leaves but hardly any flowers
When the leaves look healthy but the blooms just will not come, the plant is usually short on sun or short on root room. Anemones want at least 6 hours of direct light, and corms that have grown crowded and small quietly stop flowering. The fix is easy: move them somewhere brighter, divide the tight clumps, and feed the replanted corms in enriched soil.
Fix:
- Move or plant in a site with full sun to part shade
- Divide congested clumps and replant in enriched soil
- Feed with balanced fertilizer or compost at planting
Leaves yellow and brown off when summer comes
Take heart, because yellow foliage after the spring flowers is almost always normal dormancy rather than a disease, just the plant drawing its energy back into the corm for next year. Let the leaves fade in their own time and ease off the water. The one thing that can turn a healthy die-back into rot is too much moisture through that rest period.
Fix:
- Allow foliage to die back naturally and stop supplemental watering
- Reduce irrigation after flowering to give the corm a dry rest
Toxicity
This is one to enjoy with your eyes rather than your mouth. Every part holds protoanemonin, an irritant from the buttercup family that burns the mouth and gut if eaten and can blister bare skin where the fresh sap lands. Keep corms and cut stems out of reach of pets, livestock, and children, and just slip on gloves before you cut or divide, and you will be fine.
Toxic to
Cats · Dogs · Horses · Rabbits · Livestock · Birds · People
Cats Mild
A cat that nibbles the leaves gets a mouthful of irritating sap, so keep an eye out for drooling, pawing at the mouth, and vomiting. The good news is that the trouble stays in the mouth and gut and usually clears on its own.
Dogs Mild
Chewing the foliage leaves a dog drooling with a sore mouth and an upset stomach. Most dogs spit the bitter plant out fast, which keeps the reaction small and short, so a curious taste is rarely serious.
Horses Toxic
The same protoanemonin that bothers smaller pets can blister a horse's lips and mouth and bring on colic and drooling. Horses tend to leave the bitter foliage alone unless grazing runs thin.
Rabbits Toxic
It is best never to offer anemone to a rabbit. The irritant sap inflames the mouth and digestive tract, and such a small body handles it poorly.
Livestock Toxic
Cattle, sheep, and goats can suffer mouth blistering, drooling, and severe gut irritation if they graze it. Trouble shows up most where pasture runs short and animals turn to plants they would normally pass by.
Birds Toxic
Keep the plant and its cut stems away from pet birds, since the protoanemonin in the tissue irritates the mouth and crop. It is wiser to treat it as off limits than to risk a curious peck.
People Caution
No part of this plant is meant to be eaten, and a bite brings burning and a swollen, blistered mouth. The fresh sap can redden and blister bare skin too, so do pull on gloves whenever you cut or divide it.
Wear gloves when cutting or dividing, as fresh sap can irritate skin. Keep corms and cut stems away from pets and children.
Helpline numbers
United States
ASPCA Animal Poison Control: (888) 426-4435 (fee applies)
Poison Control: (800) 222-1222
Canada
Poison Centres: 1-844-764-7669
Varieties
Most garden anemones trace back to a handful of well-loved strains, plus a couple of named picks worth hunting down. Here are the ones you are most likely to come across.
De Caen Group
A French-bred strain that gardeners love for cutting, offering large single poppy-like flowers in a wide range of colors.
St. Brigid Group
A Dutch and Irish strain whose semi-double to double flowers make a wonderful cut bloom.
Mr. Fokker
A De Caen-type selection that opens in a single, deep violet-blue.
The Bride
A De Caen-type selection with pure white single flowers.
How to propagate
There are three ways to make more poppy anemones, and it helps to know they are not equal. Corms are the quick, beginner-friendly route, division keeps a tired old clump going, and seed is the patient gardener's path.
Bulbs & cormsEasy
Plant corms in fall in mild zones, or early spring in colder zones · Roughly 3 months to bloom after spring planting
Starting from corms is the easy, fast route and the friendliest for beginners, bringing flowers in about 3 months from a spring planting. Soak the dried corms in lukewarm water for a few hours, no more than 4, to plump them up, then settle them 2 to 3 inches deep and 4 to 6 inches apart in rich, well-drained soil.
DivisionModerate
Lift and divide dormant tuberous rhizomes after foliage dies back · One growing season
Once a clump grows crowded, simply wait until the foliage dies back and the plant is dormant, then lift and split it. Dividing every 2 to 3 years keeps the corms vigorous and flowering well, and the new splits usually settle in over a single growing season.
SeedModerate
Sow fresh seed; germination can be slow and erratic · Often more than one season to reach flowering size
Seed is the slow road, best left for when you are feeling patient. Sow it fresh, but expect germination to come slow and uneven, and count on more than one season before the plants reach flowering size, which is why most gardeners happily reach for corms instead.
Myths
Anemone flowers are safe to plant around pets and children.
Sadly this one is not true, as every part of the plant is poisonous. It holds protoanemonin, which burns and irritates the mouth and gut if eaten and can inflame or blister skin where the fresh sap touches, so it is kindest to site it well away from pets and small children.
Poppy anemones live for years as reliable perennials everywhere.
In truth they are hardy only in zones 7 to 10, and even there they tend to be short-lived, so do not feel let down if yours fade. Plenty of gardeners simply grow them as annuals, lifting or replanting the corms each season, and in colder zones they will not survive winter at all.