How to Grow Japanese Anemone
Anemone hupehensis
Japanese anemones are elegant late-summer to autumn-flowering perennials that thrive in partial shade and moist, humus-rich soil. Once established they spread freely by underground runners and need little attention. They are fully hardy and invaluable for providing colour from August to October when many other perennials have finished. Cut back dead stems in late autumn or early spring. They resent disturbance so choose their position carefully.
Yearly Lifecycle
Care Essentials
Apply a balanced general-purpose fertiliser in early spring as growth begins. Japanese anemones are not heavy feeders; over-feeding promotes leafy growth at the expense of flowers.
Watch For
- Powdery mildew in dry spells
- Slug and snail damage on new growth
- Leaf eelworm
- Vine weevil
Care Requirements
Light
Partial shade to full sun
Best in dappled or partial shade, especially in warmer areas. Tolerates full sun if soil stays moist. Shelter from strong winds protects the tall stems.
Spacing
60 cm apart
Space 60 cm apart to allow for spreading habit. Plants form large clumps over time via underground runners.
Watering
Moist but well-drained
Keep soil consistently moist, especially during the first year. Once established they tolerate some drought but flower best with regular moisture. Mulch to retain moisture.
Fertilizing
Light annual feed
Apply a balanced general-purpose fertiliser in spring. They are not heavy feeders and over-feeding promotes foliage at the expense of flowers.
Planting
Plant in spring, mulch well
Plant in spring in humus-rich, moisture-retentive soil. Mulch with well-rotted compost or leaf mould. Do not plant too deep — crown should be at soil level.
Growing Tips
Choose position carefully
Japanese anemones resent being moved once established. They prefer partial shade with shelter from strong winds, which can damage the tall flower stems.
Be patient in year one
Plants may sulk in their first year and produce little growth. By year two they establish strongly and by year three they can be vigorous spreaders.
Control spread if needed
Underground runners can make Japanese anemones invasive. Remove unwanted shoots in spring or install root barriers if planting near borders.
Excellent cut flower
Cut stems when the first flowers on a spray are open. They last well in water for 5-7 days and the buds continue to open.
Popular Varieties
Honorine Jobert, September Charm, Pamina, Queen Charlotte, Whirlwind, Wild Swan
Spacing & Planting
| Plant spacing | 60 cm |
| Row spacing | 60 cm |
| Mature height | 120 cm |
| Mature spread | 60 cm |
Allow generous spacing as Japanese anemones spread by underground runners and form large colonies over time. They can be invasive in ideal conditions.
