Geum 'Prinses Juliana' (Prinses Juliana avens) care

Light

Geum 'Prinses Juliana' needs sun on the leaves, not just bright ambient room light. Full sun to light partial shade. Generous sun produces the strongest flowering and sturdiest stems; some afternoon shade helps in hot, dry regions. 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 geum 'prinses juliana' keep soil moist but not waterlogged; water every 4-7 days in dry weather. 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. Prefers reliably moist, free-draining ground and resents both drought and winter wet. Water during prolonged dry spells, especially while establishing and flowering.

Soil and pot

Geum 'Prinses Juliana' grows best in fertile, moist but well-drained loam, neutral to slightly alkaline or acidic. Average to fertile garden soil suits it. It must drain freely in winter; on heavy clay add grit and organic matter to prevent waterlogged crowns. 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

Geum 'Prinses Juliana' sits happiest at around 40-70% humidity and -15 to 26°C (5 to 79°F). A garden perennial unconcerned with air humidity; standard outdoor moisture levels are fine. Not suited to indoor cultivation. 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 geum 'prinses juliana' sparingly. Feed lightly in spring with a balanced fertiliser or top-dress with compost. Excess nitrogen encourages floppy growth, so favour moderate, balanced feeding for prolific flowering. 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 geum 'prinses juliana' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Floppy stems — Tall flower stems can splay in rich soil or shade; site in sun and provide light support in exposed positions.
• Powdery mildew — Grey-white film on leaves develops in dry, crowded conditions; thin clumps and keep roots moist to limit it.
• Declining flowering — Blooms taper off if clumps are left congested or spent flowers remain; deadhead regularly and divide every few years.
• Winter wet rot — Crowns rot in waterlogged soil over winter; ensure sharp drainage, particularly on clay.

Propagation

Propagate by division in spring or early autumn, as this named hybrid does not come true from seed. Replant healthy outer divisions into moist, fertile soil. 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

Geum 'Prinses Juliana' is mildly toxic to pets. Geum hybrids are not individually listed by the ASPCA Toxic and Non-Toxic Plants database, so toxicity is unconfirmed; treat with caution and verify with a vet. Ingestion of plant material may cause mild stomach upset or vomiting in cats and dogs. 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.

Geum 'Prinses Juliana' deep-dive guides

Every aspect of geum 'prinses juliana' care, each with its own calibrated guide:

• Geum 'Prinses Juliana' watering schedule
• Geum 'Prinses Juliana' light requirements
• Best soil mix for geum 'prinses juliana'
• Geum 'Prinses Juliana' fertilizing guide
• When to repot geum 'prinses juliana'
• How to propagate geum 'prinses juliana'
• Geum 'Prinses Juliana' growth rate & size
• Geum 'Prinses Juliana' cold hardiness
• Geum 'Prinses Juliana' temperature & humidity
• Is geum 'prinses juliana' toxic to cats & dogs?
• Is geum 'prinses juliana' toxic to cats?
• Is geum 'prinses juliana' toxic to dogs?
• Getting geum 'prinses juliana' to bloom

Featured in these plant shortlists

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

• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best flowering houseplants — Indoor plants grown for their blooms — selected from the flowering species in Growli’s plant-care library.
• 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

Geum 'Prinses Juliana' is also commonly called Prinses Juliana avens or Princess Juliana avens.

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