Plectranthus scutellarioides 'Kong Rose' (Kong Rose Coleus) care

Light

In the wild plectranthus scutellarioides 'kong rose' grows on the bright edge of a forest canopy, not in the canopy and not in the open. Indoors, that translates to within a metre of an unobstructed window, sheer curtain optional. Part to full shade; the Kong series colours best in low to moderate light and scorches in direct sun more readily than sun coleus. Bright indirect light intensifies the rose centre. Deep shade dulls colour and stretches stems. The fastest test: a hand held at the leaf casts a soft-edged shadow at noon — sharp shadow means too much sun, no shadow means too little light.

Watering

Aim for when the top 2-3 cm of soil is dry, roughly every 2-4 days in summer for plectranthus scutellarioides 'kong rose', 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 consistently moist; the large thin leaves wilt fast if the soil dries out, though they recover quickly once watered. Avoid waterlogging, which rots stems. Containers in heat may need daily water; mulch beds to conserve moisture.

Soil and pot

Plectranthus scutellarioides 'Kong Rose' grows best in rich, moisture-retentive, well-drained potting mix. Use a fertile peat- or coir-based mix with good organic content that holds moisture yet drains freely; slightly acidic to neutral pH (6.0-7.0). Amend garden beds with compost to retain moisture for the thirsty foliage. 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

Plectranthus scutellarioides 'Kong Rose' sits happiest at around 50-70% humidity and 18-29°C (64-84°F). Prefers moderate to high humidity, which keeps the large leaves turgid and prevents crisping. The Kong series is sensitive to dry air and drafts; indoors keep away from heating vents and group with other plants to raise local humidity. If you keep the room above 18 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 plectranthus scutellarioides 'kong rose' sparingly. Feed every 1-2 weeks with a balanced liquid fertiliser at half to full strength to sustain the large leaves, or use slow-release granules at planting. The big foliage is hungry; steady feeding keeps colour vivid and growth lush. 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 plectranthus scutellarioides 'kong rose' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Sun scorch — The Kong series burns and bleaches in direct sun. Site it in shade to part shade and acclimatise gradually if moving to brighter light.
• Wilting from drying out — Large thin leaves collapse quickly when the soil dries. Keep evenly moist and mulch; they usually rebound after a thorough watering.
• Flowering and legginess — Blue flower spikes drain energy from foliage and cause stretch. Pinch out spikes and growing tips regularly to keep the plant compact and leafy.
• Cold and wind damage — Temperatures below about 10°C and exposed sites blacken and stunt the foliage. Shelter from wind and bring in or replace after first frost.

Propagation

Very easy from stem tip cuttings; they root in water or moist mix within 1-2 weeks. Take cuttings in late summer to overwinter the plant indoors. Seed-raised Kong plants are slow and variable, so cuttings best preserve the exact leaf pattern. 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

Plectranthus scutellarioides 'Kong Rose' is toxic to pets. ASPCA lists Coleus (Plectranthus scutellarioides, formerly Coleus blumei) as toxic to cats, dogs, and horses. The toxic principle is essential oils, which irritate the gut and skin. Signs include vomiting, diarrhoea, depression, loss of appetite, and occasionally bloody vomiting or diarrhoea; skin contact can cause irritation. Keep 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.

Plectranthus scutellarioides 'Kong Rose' deep-dive guides

Every aspect of plectranthus scutellarioides 'kong rose' care, each with its own calibrated guide:

• Plectranthus scutellarioides 'Kong Rose' watering schedule
• Plectranthus scutellarioides 'Kong Rose' light requirements
• Best soil mix for plectranthus scutellarioides 'kong rose'
• Plectranthus scutellarioides 'Kong Rose' fertilizing guide
• When to repot plectranthus scutellarioides 'kong rose'
• How to propagate plectranthus scutellarioides 'kong rose'
• Plectranthus scutellarioides 'Kong Rose' growth rate & size
• Plectranthus scutellarioides 'Kong Rose' cold hardiness
• Plectranthus scutellarioides 'Kong Rose' temperature & humidity
• Is plectranthus scutellarioides 'kong rose' toxic to cats & dogs?
• Is plectranthus scutellarioides 'kong rose' toxic to cats?
• Is plectranthus scutellarioides 'kong rose' toxic to dogs?
• Getting plectranthus scutellarioides 'kong rose' to bloom

Featured in these plant shortlists

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

• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best drought-tolerant houseplants — Houseplants that prefer to dry out — forgiving of forgotten watering and ideal for travel or busy weeks.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• 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 to propagate in water — Houseplants that root from a cutting in a glass of water — the easiest, cheapest way to turn one plant into many.
• Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Plectranthus scutellarioides 'Kong Rose' is also commonly called Kong Rose Coleus or Giant Coleus Rose.

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