Pelargonium 'Paul Crampel' (Paul Crampel geranium) care

Light

Most houseplants will scorch where pelargonium 'paul crampel' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun for 6 or more hours gives the most intense scarlet flowers and sturdy growth. Indoors it needs the brightest sill; in shade flowering drops and the plant grows tall and weak. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for when the top 2-3 cm of compost is dry, roughly every 5-10 days in growth for pelargonium 'paul crampel', but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. Water thoroughly then let the surface dry before re-watering. Vigorous and drought-tolerant once established, but resents soggy roots; reduce watering markedly through winter.

Soil and pot

Pelargonium 'Paul Crampel' grows best in free-draining loam-based or peat-free multipurpose compost. An open, gritty mix with perlite or sharp sand keeps roots healthy. John Innes No. 2 plus grit suits container culture; ensure good drainage in pots and beds alike. 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

Pelargonium 'Paul Crampel' sits happiest at around 30-50% humidity and 10-24°C (50-75°F). Happy in average to dry air with good airflow. High humidity and stagnant air encourage rust and botrytis; misting is unnecessary and best avoided. If you keep the room above 10 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 pelargonium 'paul crampel' sparingly. Feed fortnightly through spring and summer with a high-potash liquid feed for maximum flowering. This vigorous variety responds well to regular feeding; stop in autumn as growth slows for winter. 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 pelargonium 'paul crampel' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Legginess — Vigorous growth runs to bare stems without pruning. Pinch growing tips in spring and cut back hard before overwintering to keep a bushy shape.
• Pelargonium rust — This older variety is prone to rust: brown pustules form under the leaves in damp air. Remove infected leaves promptly and improve ventilation.
• Reduced flowering — Shade or nitrogen-rich feeding cuts blooms. Give full sun and use a high-potash feed to keep the scarlet flower heads coming.
• Grey mould (botrytis) — Cool, damp air and spent flowers cause grey rot. Deadhead regularly and avoid wetting the foliage when watering.

Propagation

Take 8-12 cm softwood or semi-ripe stem cuttings in spring or late summer. Remove lower leaves, insert into gritty cutting compost, and keep warm and just moist. This vigorous variety roots readily in 2-3 weeks without hormone. 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

Pelargonium 'Paul Crampel' is toxic to pets. The ASPCA classifies Geranium (Pelargonium) as toxic to cats and dogs, with geraniol and linalool as the toxic principles. Ingestion may cause vomiting, anorexia, depression and dermatitis. Keep this plant out of reach of 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.

Pelargonium 'Paul Crampel' deep-dive guides

Every aspect of pelargonium 'paul crampel' care, each with its own calibrated guide:

• Pelargonium 'Paul Crampel' watering schedule
• Pelargonium 'Paul Crampel' light requirements
• Best soil mix for pelargonium 'paul crampel'
• Pelargonium 'Paul Crampel' fertilizing guide
• When to repot pelargonium 'paul crampel'
• How to propagate pelargonium 'paul crampel'
• Pelargonium 'Paul Crampel' growth rate & size
• Pelargonium 'Paul Crampel' cold hardiness
• Pelargonium 'Paul Crampel' temperature & humidity
• Is pelargonium 'paul crampel' toxic to cats & dogs?
• Is pelargonium 'paul crampel' toxic to cats?
• Is pelargonium 'paul crampel' toxic to dogs?
• Getting pelargonium 'paul crampel' to bloom

Featured in these plant shortlists

Pelargonium 'Paul Crampel' qualifies for 6 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.
• 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.
• Best fast-growing houseplants — Houseplants documented as fast or vigorous growers — quick to fill a pot, cover a pole or trail down a shelf.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Pelargonium 'Paul Crampel' is also commonly called Paul Crampel geranium or Victorian bedding geranium.

• Peace lily care — light, water and common problems
• Bird of paradise care — light, water and common problems
• Hoya care — light, water and common problems
• All 5561 plant care guides in the Growli library