In short
- Site: sun or partial shade under deciduous trees, moist, humus-rich, preferably limy soil.
- Blooms in February and March, providing bees with early pollen.
- Forms golden carpets and self-seeds abundantly.
- A toxic plant — contains cardiac glycosides.
- Dry tubers establish poorly; better to plant specimens with green leaves.
Botanical data
- Family
- Ranunculaceae (Ranunculaceae)
- Height
- 0.05–0.15 m
- Width
- 0.05–0.1 m
- Habit
- Creeping
- Growth rate
- Moderate
- Position
- Full sun, Partial shade
- Soil
- Humus-rich, Chalky, Loamy
- pH reaction
- pH 6.5–7.5
- Moisture
- Moderate
- Bloom
- February–March
- Hardiness
- USDA 4a–7b
- Propagation
- From bulbs / tubers, From seed
Characteristics
From the small, dark tuber grows a single flower, supported by a distinctive green collar of deeply cut leaves. The glossy, yellow flowers open in the sun and close on dull and frosty days. After flowering the plant quickly dies down and enters summer dormancy.
Growing and care
Watering
In spring, during growth, the soil should be moist. In summer the tubers are dormant and tolerate dryness in the shade of trees — watering is then unnecessary.
0Fertilizing
A thin layer of leaf mould; winter aconite grows well on humus-rich, limy soil without heavy feeding.
Planting
Moist, humus-rich soil under trees that are leafless in spring. Dry tubers establish poorly — it is worth soaking them for a day before planting.
Pruning
Remove only the spent flowers if you want to limit self-seeding; let the leaves die down.
Companion plants
Good companions
The most famous pairing of early spring — the yellow winter aconite flowers and the white snowdrops bloom at the same time, forming a colourful carpet.
The intensely blue squills and the yellow winter aconite give a strong colour contrast in early spring and like the same open sites.
Both geophytes naturalise under trees and extend the earliest flowering season of the bed.
Bad companions
Winter aconite needs early-spring sun before the deciduous trees green up; the permanent shade of conifers prevents flowering and naturalisation.
The evidence level indicates whether the relationship is backed by research, observation, or gardening tradition.
Toxicity
| For whom | Level | Notes |
|---|---|---|
| Humans | Moderate | The whole plant contains cardiac glycosides; ingestion risks vomiting, diarrhoea and heart-rhythm disturbances. |
| Dogs | Moderate | Eating the tubers or leaves causes vomiting, diarrhoea and cardiac disturbances. |
| Cats | Moderate | — |
History and origin
Winter aconite was long planted in the monastery and cottage gardens of southern Europe as a herald of spring. From cultivation it spread northwards, where today it forms extensive natural drifts in many parks and woodlands.
Uses
For naturalising under deciduous trees, at the edges of thickets, in parks and woodland gardens. It looks best planted en masse, together with snowdrops and squills, with which it forms colourful early-spring pictures.
Trivia
- The genus name Eranthis derives from the Greek words for spring and flower.
- The flowers open only at a sufficiently high temperature, thereby protecting the pollen from frost.
Frequently asked questions
Why don't the winter aconite tubers I bought come up?
Dry winter aconite tubers dry out easily and establish poorly. It helps to soak them for a day before planting; the most reliable method is transplanting plants with green leaves, right after flowering.
Is winter aconite poisonous?
Yes. The whole plant contains cardiac glycosides and is poisonous if eaten, both to people and to pets. It should be planted with care.
How can I encourage winter aconite to self-seed and form carpets?
The key is self-seeding: leave the spent flowers so they set seed, and do not rake up the fallen leaves. Winter aconite naturalises best under deciduous trees on moist, humus-rich and limy soil. The seedlings only flower after a few years, so a little patience is needed.
Sources
- Plants of the World Online (POWO)Database (GBIF, POWO…)
- RHS — Eranthis hyemalisInstitution / botanical garden
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