Overview
Anemone richardsonii is a clump forming herbaceous perennial in the genus Anemone, part of the Ranunculaceae family, with deciduous foliage. Anemone richardsonii grows best in full sun and partial shade, and tolerates most soils and any pH. Its UK hardiness is rated H6. Suggested uses include borders, containers and under trees.
About
Anemonastrum richardsonii, commonly known as yellow thimbleweed, is named after a Scottish naturalist, Sir John Richardson (1787–1865) who found it on Franklin's expedition to the Arctic. It is a perennial, deciduous plant that blooms in mid to early June. It is native to North America, GL and NO. In the garden it prefers full sun and partial shade and most soil types. In UK gardens it is very hardy across most of the UK (RHS H6). Suggested uses include borders, containers and under trees. It tolerates soil of any pH, moist but well-drained conditions and south-facing, east-facing and west-facing aspects. Plant at appropriate depth in well-drained soil.
Wikipedia contributors, CC BY-SA 4.0 — Anemonastrum richardsonii
About the genus
Anemone is a genus of flowering plants in the buttercup family Ranunculaceae. Plants of the genus are commonly called windflowers. They are native to the temperate and subtropical regions of all regions except Australia, New Zealand, and Antarctica.
Wikipedia contributors, "Anemone", CC BY-SA 4.0 — Anemone
Growing conditions
Best soil and position for Anemone
- Sunlight
- Full sun, Partial shade
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing, East-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
Anemone richardsonii size, habit and characteristics
- Plant type
- Herbaceous Perennial
- Habit
- Clump forming
- Foliage
- Deciduous
- Suggested uses
- Borders, Containers, Under trees
Care notes
Pruning and caring for Anemone richardsonii
- Propagation
- Division of rhizomes
- Pest resistance
- Susceptible to leaf eelworms, caterpillars, slugs
- Disease resistance
- Susceptible to powdery mildews
Frequently asked questions
Where is the best place to plant Anemone richardsonii?
Anemone richardsonii prefers full sun and partial shade. It suits sheltered positions.
What soil does Anemone richardsonii need?
Anemone richardsonii is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays moist but well-drained.
Is Anemone richardsonii hardy in the UK?
Anemone richardsonii has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Anemone richardsonii?
Division of rhizomes.