Anemone coronaria 'Hollandia' (Hollandia anemone) care

Light

Anemone coronaria 'Hollandia' needs sun on the leaves, not just bright ambient room light. Full sun for best flower count and strong stems; tolerates light afternoon shade in hot regions but flowering thins in deep shade. A south or west-facing windowsill in the northern hemisphere is the default; anywhere else, expect the plant to stretch and pale out within a season.

Watering

Water anemone coronaria 'hollandia' keep soil evenly moist during active growth and flowering; every 5-7 days if no rain. 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. Water steadily from emergence through bloom, never waterlogged. Taper off as foliage yellows after flowering and keep dormant corms dry to prevent rot.

Soil and pot

Anemone coronaria 'Hollandia' grows best in free-draining, fertile loam enriched with compost, near-neutral ph. Demands sharp drainage; heavy wet clay rots the corms. Work in grit and leaf mould. A pH around 6.0-7.0 suits it; add lime to very acidic soils. 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

Anemone coronaria 'Hollandia' sits happiest at around 40-60% humidity and 8-18°C (46-64°F). An outdoor plant indifferent to ambient humidity; good airflow matters more than moisture to deter botrytis and powdery mildew on the foliage. If you keep the room above 8 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 anemone coronaria 'hollandia' sparingly. Fork in balanced general fertiliser or compost at planting; feed lightly with a high-potash (tomato-type) liquid feed every 2-3 weeks once buds appear to sustain blooms. Stop feeding as foliage dies back. 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 anemone coronaria 'hollandia' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Corm rot in wet soil — Heavy, waterlogged ground rots the tubers before they sprout. Plant in sharply drained soil or raised beds and avoid overwatering dormant corms.
• Poor sprouting from dry corms — Hard, shrivelled corms emerge slowly. Soak them 3-4 hours (not longer) in water before planting to rehydrate and speed sprouting.
• Powdery mildew and botrytis — Crowded, damp foliage develops grey mould or white mildew. Space plants, water at the base, and ensure good airflow.
• Foliage flops and flowering fades early — Too much shade gives weak, leggy stems and few flowers. Move to a sunnier spot; this is a full-sun plant.

Propagation

Propagate by lifting and dividing the knobbly tubers when dormant in summer, replanting offsets in autumn or early spring. Can also be grown from seed sown fresh, though named clones like 'Hollandia' come true only from division, not seed. 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

Anemone coronaria 'Hollandia' is toxic to pets. The ASPCA lists Anemone as toxic to cats, dogs and horses. Like its Ranunculaceae relatives (buttercup, clematis), it contains the irritant glycoside protoanemonin; ingestion can cause hypersalivation, vomiting, diarrhoea, oral and skin irritation, and lethargy. Keep corms and cut stems away from pets. 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.

Anemone coronaria 'Hollandia' deep-dive guides

Every aspect of anemone coronaria 'hollandia' care, each with its own calibrated guide:

• Anemone coronaria 'Hollandia' watering schedule
• Anemone coronaria 'Hollandia' light requirements
• Best soil mix for anemone coronaria 'hollandia'
• Anemone coronaria 'Hollandia' fertilizing guide
• When to repot anemone coronaria 'hollandia'
• How to propagate anemone coronaria 'hollandia'
• Anemone coronaria 'Hollandia' growth rate & size
• Anemone coronaria 'Hollandia' cold hardiness
• Anemone coronaria 'Hollandia' temperature & humidity
• Is anemone coronaria 'hollandia' toxic to cats & dogs?
• Is anemone coronaria 'hollandia' toxic to cats?
• Is anemone coronaria 'hollandia' toxic to dogs?
• Getting anemone coronaria 'hollandia' to bloom

Featured in these plant shortlists

Anemone coronaria 'Hollandia' qualifies for 4 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• Houseplants toxic to cats & dogs — The common houseplants the ASPCA lists as toxic to cats and dogs — the ones to keep out of reach, each with its symptoms and a safe alternative.
• Best houseplants for full sun — Houseplants that want direct sun — the species for a hot south or west-facing windowsill where shade-lovers scorch.
• Best houseplants for a cool room — Houseplants that tolerate cool conditions down to about 10°C — for an unheated spare room, hallway, porch or a home kept cool.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Anemone coronaria 'Hollandia' is also known as Hollandia anemone, red poppy anemone, and scarlet anemone.

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