Coreopsis 'Sunkiss' (Sunkiss Tickseed) care

Light

Most houseplants will scorch where coreopsis 'sunkiss' thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun (6+ hours) is optimal for flowering and a compact habit. Tolerates light partial shade, particularly in very hot climates where afternoon shade helps prevent stress. 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, roughly every 5-7 days for coreopsis 'sunkiss', 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. Unlike most Coreopsis, C. rosea prefers slightly more consistent moisture. It tolerates brief dry spells but prolonged drought causes premature flowering termination. Avoid waterlogging.

Soil and pot

Coreopsis 'Sunkiss' grows best in moist, well-drained loamy or sandy soil. Tolerates slightly moister, less fertile soils than other Coreopsis species. Avoid heavy clay and excessively rich soils. Good drainage remains important. 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

Coreopsis 'Sunkiss' sits happiest at around 40-70% humidity and -20-28°C (-4-82°F). Tolerates moderate to slightly higher humidity than other Coreopsis species. Maintain good airflow to prevent fungal problems. 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 coreopsis 'sunkiss' sparingly. Apply a light, balanced granular fertiliser in spring. Moderate feeding supports flowering without causing excessive growth. Avoid high-nitrogen formulas. 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 coreopsis 'sunkiss' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Drought stress — Unlike most Coreopsis, C. rosea needs more consistent moisture. Prolonged dry spells cause premature flowering and leaf scorch. Mulch to conserve soil moisture.
• Root rot in waterlogged soil — Prefers moisture but not standing water. Ensure drainage is adequate.
• Leggy growth in shade — Insufficient sun causes the spreading habit to become untidy. Plant in full to near-full sun.
• Aphids — Can colonise new shoot tips. Control with water jets or insecticidal soap.
• Clump decline — Divide every 3-4 years in spring to maintain vigorous flowering.

Companion plants

Coreopsis 'Sunkiss' pairs well with Lobelia cardinalis, Monarda 'Marshall's Delight', Phlox paniculata, and Astilbe 'Deutschland'. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.

Propagation

Divide clumps in spring every 3-4 years. Stem cuttings from basal growth root readily in spring. Seed-grown plants are variable; propagate named cultivars vegetatively. 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

Coreopsis 'Sunkiss' is pet-safe. Coreopsis is listed as non-toxic to dogs and cats by the ASPCA. 'Sunkiss' is a cultivar of Coreopsis rosea and is considered safe for 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.

Coreopsis 'Sunkiss' deep-dive guides

Every aspect of coreopsis 'sunkiss' care, each with its own calibrated guide:

• Common coreopsis 'sunkiss' problems & fixes
• Coreopsis 'Sunkiss' watering schedule
• Coreopsis 'Sunkiss' light requirements
• Best soil mix for coreopsis 'sunkiss'
• Coreopsis 'Sunkiss' fertilizing guide
• When to repot coreopsis 'sunkiss'
• How to propagate coreopsis 'sunkiss'
• How to prune coreopsis 'sunkiss'
• What's eating my coreopsis 'sunkiss'?
• Coreopsis 'Sunkiss' growth rate & size
• Coreopsis 'Sunkiss' cold hardiness
• Coreopsis 'Sunkiss' temperature & humidity
• Is coreopsis 'sunkiss' toxic to cats & dogs?
• Is coreopsis 'sunkiss' toxic to cats?
• Is coreopsis 'sunkiss' toxic to dogs?
• All 24 Coreopsis varieties
• Getting coreopsis 'sunkiss' to bloom

Featured in these plant shortlists

Coreopsis 'Sunkiss' qualifies for 10 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
• 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 pet-safe low-maintenance plants — Non-toxic to cats and dogs and forgiving of forgotten watering — the easiest safe choices for a busy pet household.
• Best pet-safe flowering plants — Flowering houseplants the ASPCA lists as non-toxic to cats and dogs — colour and blooms in a pet home, without the worry.
• Best pet-safe plants for bright light — Non-toxic to cats and dogs and happy in a bright, sunny spot — safe plants for your best-lit windowsill.
• 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 cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
• Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

Related guides

Coreopsis 'Sunkiss' is also known as Sunkiss Tickseed, Pink Coreopsis 'Sunkiss', and Rose Coreopsis.

• Narcissus 'Minnow' care — light, water and common problems
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• Hyacinthus orientalis 'Woodstock' care — light, water and common problems
• All 11687 plant care guides in the Growli library