Clematis 'The President' (The President clematis) care

Light

Most houseplants will scorch where clematis 'the president' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun to part shade on the top growth with cool, shaded roots. The deep blue-purple flowers hold their colour well in sun, though light shade prolongs the blooms. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.

Watering

Aim for keep soil evenly moist; water deeply once or twice a week in dry spells for clematis 'the president', 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. Thirsty and intolerant of dry roots, particularly when establishing and in flower. Water generously during dry weather and mulch to retain soil moisture and keep the root zone cool.

Soil and pot

Clematis 'The President' grows best in fertile, humus-rich, moist but well-drained soil. Deep, fertile, organic-rich soil, ideally neutral to slightly alkaline. Follow the clematis rule of cool, shaded roots and stems in the light, using mulch or low planting to shade the base. 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

Clematis 'The President' sits happiest at around Ambient outdoor humidity and -29 to 27°C (-20 to 80°F). An outdoor climber needing no special humidity; it depends on cool, moist soil rather than air humidity. 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 clematis 'the president' sparingly. Hungry plant. Apply a balanced or potassium-rich rose/clematis feed in early spring and again after the first flush, plus an annual mulch of compost or well-rotted manure kept off the stems, to support both flushes of flower. 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 clematis 'the president' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Clematis wilt — Large-flowered clematis can suddenly wilt from fungal infection. Plant the crown 5-8 cm deep so it can regrow, cut affected stems back to healthy tissue, and keep it watered and fed.
• Bare, leggy base — Group 2 clematis flower on old wood and can become bare low down. Train shoots outward and low, and reduce some stems in spring to encourage basal growth.
• Poor flowering from drought — Dry roots reduce flower numbers. Mulch deeply, shade the root zone, and water consistently through the growing season.
• Mistimed pruning — Cutting it back hard in spring removes the early-summer flowers that form on old wood. Only lightly tidy and remove dead growth in late winter.

Propagation

Take semi-ripe internodal cuttings in early to mid summer, or layer a low stem in spring and sever once rooted the next year. The cultivar will not come true from 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

Clematis 'The President' is toxic to pets. The ASPCA lists Clematis as toxic to cats, dogs and horses. The toxic principle is the irritant glycoside protoanemonin; signs of ingestion include drooling, vomiting and diarrhoea. Keep pets from chewing the foliage and stems. 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.

Clematis 'The President' deep-dive guides

Every aspect of clematis 'the president' care, each with its own calibrated guide:

• Clematis 'The President' watering schedule
• Clematis 'The President' light requirements
• Best soil mix for clematis 'the president'
• Clematis 'The President' fertilizing guide
• When to repot clematis 'the president'
• How to propagate clematis 'the president'
• Clematis 'The President' growth rate & size
• Clematis 'The President' cold hardiness
• Clematis 'The President' temperature & humidity
• Is clematis 'the president' toxic to cats & dogs?
• Is clematis 'the president' toxic to cats?
• Is clematis 'the president' toxic to dogs?
• Getting clematis 'the president' to bloom

Featured in these plant shortlists

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

• Best trailing & climbing houseplants — Vining and trailing houseplants for shelves, hanging pots, and moss poles — selected by growth habit.
• 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

Clematis 'The President' is also commonly called The President clematis or blue-purple clematis.

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