Japanese anemone 'Honorine Jobert'

Sun

Partial shade; full sun where the soil stays moist. Give afternoon shade in hot climates.

Water

Keep evenly moist but not waterlogged, especially while establishing and during summer drought.

Soil

Humus-rich, moisture-retentive soil with good drainage; tolerates acidic, neutral and alkaline conditions.

Height

3-5 ft (0.9-1.5 m)

Spread

2-3 ft (0.6-0.9 m), spreading farther over time through creeping roots

Flowers

Late summer to mid-autumn; single white flowers with golden-yellow centres.

Foliage

Dark green, toothed, lobed leaves form a leafy basal clump, with smaller leaves on the flowering stems.

Growth

Slow to establish, then moderate to vigorous where conditions suit it.

Care needed

Medium

• Pollinators
• Deer resistant
• Low allergen

Northern hemisphere months. In Australia, shift them by six.

Difficulty

Moderate

Toughness

Fairly tough

Pick your zone, country, light and whether you have pets.

1. Planting day

   1 ft (0.3 m)

2. After 1 year

   2 ft (0.6 m)

3. After 2 years

   3 ft (0.9 m)

4. After 3 years

   4 ft (1.2 m)

   full size

About 3 years to full size.

From a typical nursery size, at an average rate for this kind of plant. A rule of thumb, not a forecast.

Cats and dogs

Toxic

In the garden

Spreads vigorously: plan to contain it.

Growth rate

Moderate

• Water deeply during dry spells; do not let newly planted roots dry out.
• Mulch in spring with compost or leaf mould, keeping it clear of the crown.
• Apply a light balanced feed in spring only if growth is weak or the soil is poor.
• Use discreet supports early in the season on exposed sites.
• Divide congested clumps in spring and remove unwanted shoots with their attached roots.

Pruning. Cut dead flower stems and foliage to ground level in late autumn, or leave the seedheads and clear them in late winter before new growth. Deadhead spent blooms if you prefer a tidier appearance.

Late winter

Cut down any remaining dead stems before new shoots emerge.

Spring

Plant or divide clumps, water thoroughly and mulch with compost.

Late spring

Install supports where wind may bend the tall flowering stems.

Summer

Water during dry spells and check for shoots spreading into neighbouring plants.

Late summer

Remove spent flowers if desired, leaving healthy leaves to support the roots.

Late autumn

Remove collapsed foliage, or leave upright stems for winter structure.

• Plant toward the back of a mixed border, where the white flowers rise above lower foliage.
• Use at a bright woodland edge with ferns and hostas for late-season flowers.
• Repeat in a white garden with white asters and silver-leaved plants.
• Combine with ornamental grasses and autumn-flowering asters for contrasting flower shapes and movement.

Garden styles it suits: English country, Cottage garden, Woodland, White garden, Romantic rose garden and Autumn colour.

Plant it with: Hostas, Hardy geraniums, Lady ferns, Astrantias, Autumn asters and Japanese forest grass.

Wildlife: The open flowers provide pollen for bees and other visiting insects late in the season.

• Dry soil can cause scorched leaves, wilting and poor flowering; water deeply and mulch to conserve moisture.
• Slugs and snails may damage emerging shoots; inspect young growth and use traps or locally approved iron-phosphate bait if needed.
• Powdery mildew may appear on stressed or crowded plants; maintain soil moisture, improve spacing and remove badly affected foliage.
• Creeping roots can produce unwanted colonies; dig out shoots with their roots and recheck the area, as fragments can regrow.

Treat all parts as toxic to people, cats, dogs and horses if eaten. Fresh tissue contains irritating compounds that can cause mouth irritation, drooling, vomiting or diarrhoea; substantial ingestion can be more serious. Sap may also irritate sensitive skin.

Where it spreads. Can spread aggressively by creeping roots in moist, mild-climate gardens, including the UK and the coastal Pacific Northwest of the United States and Canada. This is a garden-management warning, not a claim that this cultivar is formally listed as invasive.

• Japanese anemone 'Whirlwind' (Anemone × hybrida 'Whirlwind')

  Its white flowers are semi-double, with more overlapping petal-like sepals; 'Honorine Jobert' has simpler, single flowers with an open centre.

• Snowdrop anemone (Anemone sylvestris)

  A much shorter plant, usually flowering in spring to early summer rather than late summer and autumn.

• Giant white windflower (Anemone 'Wild Swan')

  Its white flowers have conspicuous violet-blue colouring on their backs, and the plant is generally shorter and begins flowering earlier.

Anemone comes from the Greek word for wind, which also gives the plant its common name, windflower.

Propagation. Divide established clumps in spring or take root cuttings during dormancy. Root fragments can regenerate, so remove them carefully when relocating plants. Seedlings will not reliably retain the cultivar's characteristics.

Accepted botanical name

Anemone hybrida

Sources: GBIF (CC BY 4.0). The care and design notes are LandscapeGPT's own.