Key Facts
- Perennial herb with bright yellow cup shaped flowers
- Native to temperate Europe and Asia and naturalized elsewhere
- Prefers moist meadows, pastures and other damp soils
- Spreads by seed and persistent roots and can become weedy in grassland
- Contains protoanemonin which can cause skin irritation on contact
- Can be toxic to livestock and pets if fresh plants are eaten
- Flowers appear in late spring to early summer
- Not tolerant of prolonged drought
Tall Buttercup is a bright yellow perennial of damp meadows used where a naturalized meadow look is wanted and quick spring color is useful. It flowers in late spring to early summer but can spread by seed and roots so plan for containment in managed turf or garden beds.
Identification
Tall Buttercup has shiny yellow cup shaped flowers carried above divided green leaves on upright stems reaching about 12 to 30 inches tall. Plants form patches 12 to 24 inches across from seed and persistent rootstocks and produce blooms from May through July in the Northern Hemisphere.
Best uses and where to grow
Use Tall Buttercup in meadow plantings and damp naturalized borders where moist soil is available and a low maintenance spring display is desired. It prefers full sun to part shade and tolerates poorly drained ground so it suits wet meadows and pasture edge plantings rather than dry rock gardens or containers.
Planting time and spacing
Establish new plants or divisions when the soil is workable in spring or autumn so roots can settle before extremes of heat or frost. Space plants about 12 to 24 inches apart to allow for typical spread and to reduce competition when forming clumps in a meadow style planting.
Watering and soil
Tall Buttercup prefers moist to wet fertile soils and does not tolerate prolonged drought. In consistently damp ground it flowers more reliably and spreads vigorously while dry, well drained conditions reduce vigor and bloom. Improving drainage will slow spread in pasture situations where the species becomes weedy.
After flowering care
Cut back faded flower stems to limit seed production if containment is needed and remove seed heads before they mature to reduce self seeding. Clumps can be divided in autumn or spring to renew vigor and to transplant into suitable damp sites or remove unwanted patches.
Controlling spread
Populations spread by seed and persistent rootstocks so remove plants before seed set and dig out roots to reduce regrowth. Improving drainage in pastures and mowing or grazing timed to prevent seeding help control numbers. Repeated removal of root fragments is often required for persistent infestations.
Toxicity and safety
Tall Buttercup contains protoanemonin which can irritate skin on contact and cause gastrointestinal upset if fresh plant material is eaten. It can be toxic to livestock and may affect pets. Drying reduces but may not eliminate toxicity and local veterinarians or extension services can advise on regional risk.
Frequently asked questions
- How fast does Tall Buttercup grow?
- Growth can be quick in moist fertile soil and plants may form visible patches within a single season from seed and spreading rootstocks.
- Is Tall Buttercup invasive?
- It can become weedy in grassland and wet meadows because it spreads by seed and persistent roots and may require management to prevent takeover of pasture or lawn.
- Can livestock eat it?
- Fresh plants are considered toxic to grazing animals and can cause gastrointestinal and dermal symptoms. Consult a veterinarian or extension service for local guidance.
- Will mowing control it?
- Mowing before seed heads form reduces seeding but will not remove persistent rootstocks. Combined approaches such as digging roots and improving drainage give better long term control.
- Can I grow it in containers?
- It prefers moist open ground and is not well suited to containers where soils dry quickly and restrict rootstock spread.
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