Ipomoea nil 'Scarlett O'Hara' (Scarlett O'Hara morning glory) care

Light

Most houseplants will scorch where ipomoea nil 'scarlett o'hara' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun, at least 6 hours daily, drives the best flowering and richest colour. In shade it climbs but blooms sparsely. 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 soil is dry, about every 3-5 days in summer for ipomoea nil 'scarlett o'hara', 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. Keep soil evenly moist during growth and flowering. Tolerates short dry spells once established but flowers best with consistent moisture; never let it sit waterlogged.

Soil and pot

Ipomoea nil 'Scarlett O'Hara' grows best in average, well-drained soil. Moderately fertile, free-draining soil is ideal; overly rich ground delays flowering. Neutral to slightly acidic pH suits it. 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

Ipomoea nil 'Scarlett O'Hara' sits happiest at around 40-70% humidity and 18 to 30°C (64 to 86°F). A warm-season annual indifferent to humidity. Normal summer air is fine; no special humidity care required. If you keep the room above 18 to 30°C 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 ipomoea nil 'scarlett o'hara' sparingly. Feed lightly. Excess nitrogen produces vine at the expense of flowers — the usual morning-glory pitfall. A high-potash feed used sparingly, or none in decent soil, gives the best bloom. 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 ipomoea nil 'scarlett o'hara' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Leafy growth, few blooms — Over-feeding with nitrogen or too little sun. Stop nitrogen feeding and ensure full sun to trigger flowering.
• Slow germination — Hard seed coat delays emergence. Nick and soak the seed overnight before sowing for reliable germination.
• Frost sensitivity — Completely frost-tender. Do not sow out or plant until all danger of frost has passed and soil has warmed.
• Aphid and spider-mite attack — Soft new growth attracts aphids; hot dry spells bring spider mites. Hose off and treat persistent infestations with insecticidal soap.

Propagation

From seed, sown direct after the last frost or started indoors 4-6 weeks earlier in cool climates. Scarify and pre-soak the hard seed for even germination. 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

Ipomoea nil 'Scarlett O'Hara' is toxic to pets. ASPCA lists Morning Glory (Ipomoea spp.) as toxic to cats, dogs, and horses, and 'Scarlett O'Hara' is a cultivar of Ipomoea nil. Toxic principles are indole alkaloids (lysergic acid, lysergamide, elymoclavine, chanoclavine); ingestion causes vomiting, and large quantities of seed may cause hallucinations. Keep seeds 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.

Ipomoea nil 'Scarlett O'Hara' deep-dive guides

Every aspect of ipomoea nil 'scarlett o'hara' care, each with its own calibrated guide:

• Ipomoea nil 'Scarlett O'Hara' watering schedule
• Ipomoea nil 'Scarlett O'Hara' light requirements
• Best soil mix for ipomoea nil 'scarlett o'hara'
• Ipomoea nil 'Scarlett O'Hara' fertilizing guide
• When to repot ipomoea nil 'scarlett o'hara'
• How to propagate ipomoea nil 'scarlett o'hara'
• Ipomoea nil 'Scarlett O'Hara' growth rate & size
• Ipomoea nil 'Scarlett O'Hara' cold hardiness
• Ipomoea nil 'Scarlett O'Hara' temperature & humidity
• Is ipomoea nil 'scarlett o'hara' toxic to cats & dogs?
• Is ipomoea nil 'scarlett o'hara' toxic to cats?
• Is ipomoea nil 'scarlett o'hara' toxic to dogs?
• Getting ipomoea nil 'scarlett o'hara' to bloom

Featured in these plant shortlists

Ipomoea nil 'Scarlett O'Hara' qualifies for 5 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 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

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Ipomoea nil 'Scarlett O'Hara' is also commonly called Scarlett O'Hara morning glory.

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