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Plant care

Grape-leaved Anemone 'Robustissima' (Grape-leaved Anemone) care

Anemone tomentosa

Also called Grape-leaved Anemone, Hairy Anemone, Chinese Anemone.

RHS H7USDA 3-9Toxic to petsIndoor 90-120 cm tall in flower

Watering rhythm

7-14days

When the top 4-5 cm of soil is dry, roughly every 7-14 days

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Light

Bright indirect light (just back from a sunny window)

Soil

Moist to moderately dry, well-drained loam or clay-loam

Humidity

40-60%

Temp

-25-30°C

Pet safety

Toxic to pets

Mature size

90-120 cm tall in flower

Care at a glance

Light

Grape-leaved Anemone 'Robustissima' is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. Best in partial shade to full sun; tolerates a wider range of light conditions than most autumn anemones. In hot climates, afternoon shade reduces heat stress and prolongs flowering. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water grape-leaved anemone 'robustissima' when the top 4-5 cm of soil is dry, roughly every 7-14 days. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. More drought-tolerant than most anemones once established. In its first year, regular watering during dry spells aids establishment. Avoid standing water around the crown.

Soil and pot

Grape-leaved Anemone 'Robustissima' grows best in moist to moderately dry, well-drained loam or clay-loam. Adapts to a wide range of soils including clay, provided drainage is not very poor. A neutral to slightly alkaline pH (6.5-7.5) is preferred. Incorporate organic matter before planting. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Grape-leaved Anemone 'Robustissima' sits happiest at around 40-60% humidity and -25-30°C (-13-86°F). Average garden humidity is perfectly adequate. Unlike many woodland anemones it tolerates open, exposed sites with lower humidity, provided soil moisture is maintained. If you keep the room above year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed grape-leaved anemone 'robustissima' sparingly. Apply a balanced granular feed or well-rotted compost mulch in early spring. Very fertile soils or heavy nitrogen feeding will produce lush growth and increased spread but may reduce flower quantity; lean conditions are preferred. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on grape-leaved anemone 'robustissima' in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Excessive spread — Rhizomes can spread very aggressively; contain with root barriers or plant in restricted beds. Unwanted shoots should be removed promptly.
  • Slow to flower after moving — Transplanting can delay flowering for 1-2 years; once re-established the plant blooms freely.
  • Leaf spot — Brown leaf spots appear in wet seasons; remove affected foliage and ensure good air circulation.
  • Late frost damage — Late spring frosts can damage emerging shoots; protect young growth with fleece if a hard frost is forecast.

Companion plants

Grape-leaved Anemone 'Robustissima' pairs well with Miscanthus sinensis, Rudbeckia fulgida, Actaea simplex, and Persicaria amplexicaulis. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Divide vigorous rhizomatous clumps in early spring or autumn; each section with a growing point establishes quickly. Root cuttings taken in late autumn to winter are another reliable method. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Grape-leaved Anemone 'Robustissima' is toxic to pets. The ASPCA lists Anemone species as toxic to dogs, cats, and horses; protoanemonin in all plant parts causes oral irritation, drooling, vomiting, diarrhoea, and in large quantities may cause more serious systemic effects. Seek veterinary attention promptly if ingestion is suspected. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Grape-leaved Anemone 'Robustissima' care — frequently asked questions

What is the common name for Anemone tomentosa?

Anemone tomentosa is most commonly called Grape-leaved Anemone 'Robustissima', but it is also known as Grape-leaved Anemone, Hairy Anemone, Chinese Anemone. The names refer to the same species, so care instructions for Grape-leaved Anemone 'Robustissima' apply identically to anything sold as Grape-leaved Anemone.

How much light does grape-leaved anemone 'robustissima' need?

Grape-leaved Anemone 'Robustissima' grows best in bright indirect light (just back from a sunny window). Best in partial shade to full sun; tolerates a wider range of light conditions than most autumn anemones. In hot climates, afternoon shade reduces heat stress and prolongs flowering.

How often should I water grape-leaved anemone 'robustissima'?

Water grape-leaved anemone 'robustissima' when the top 4-5 cm of soil is dry, roughly every 7-14 days. More drought-tolerant than most anemones once established. In its first year, regular watering during dry spells aids establishment. Avoid standing water around the crown. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is grape-leaved anemone 'robustissima' toxic to cats and dogs?

Grape-leaved Anemone 'Robustissima' is toxic to pets. The ASPCA lists Anemone species as toxic to dogs, cats, and horses; protoanemonin in all plant parts causes oral irritation, drooling, vomiting, diarrhoea, and in large quantities may cause more serious systemic effects. Seek veterinary attention promptly if ingestion is suspected.

What USDA hardiness zone does grape-leaved anemone 'robustissima' grow in?

Grape-leaved Anemone 'Robustissima' is rated for USDA zone 3-9 and RHS hardiness H7. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Grape-leaved Anemone 'Robustissima' deep-dive guides

Every aspect of grape-leaved anemone 'robustissima' care, each with its own calibrated guide:

Featured in these plant shortlists

Grape-leaved Anemone 'Robustissima' qualifies for 6 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Grape-leaved Anemone 'Robustissima' is also known as Grape-leaved Anemone, Hairy Anemone, and Chinese Anemone.