Plant care
White Wild Quinine (wild quinine) care
Parthenium integrifolium
Also called wild quinine, American feverfew, eastern feverfew.
Watering rhythm
Direct sun (at least 4-6 hours)
Water to establish, then sparingly; drought-tolerant once rooted
Light
Direct sun (at least 4-6 hours)
Soil
Well-drained, average-to-lean loam, sand, or rocky soil
Humidity
30-60%
Temp
-7 to 30°C
Pet safety
Mildly toxic to pets
Mature size
90-150 cm (3-5 ft) tall
Care at a glance
Light
Most houseplants will scorch where white wild quinine thrives. Give it the windowsill you'd otherwise leave empty because everything else burned there. Full sun gives the strongest stems and longest bloom. It tolerates light shade but flowers less freely and may lean. A plant moved abruptly from low light to direct sun bleaches in 48 hours — always acclimatise over a week.
Watering
Aim for water to establish, then sparingly; drought-tolerant once rooted for white wild quinine, 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. A deep-rooted prairie species that handles dry, average soils well. Avoid persistently wet ground; let soil dry between waterings.
Soil and pot
White Wild Quinine grows best in well-drained, average-to-lean loam, sand, or rocky soil. Adaptable and unfussy at neutral pH; copes with poor, dry, gravelly ground. Sharp drainage is the main requirement. 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
White Wild Quinine sits happiest at around 30-60% humidity and -7 to 30°C (20-86°F). A hardy outdoor prairie perennial untroubled by ambient humidity; airflow keeps the foliage clean in humid summers. 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 white wild quinine sparingly. Needs little to no feeding; it thrives on lean soils. A light spring compost mulch suffices, and avoiding rich feeds keeps the long stems upright. 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 white wild quinine in the Growli community. Each is annotated with the most common cause so you know where to start.
- Contact skin irritation — Sap and rough foliage can irritate sensitive skin; wear gloves when cutting or handling it.
- Slow to establish — It builds a deep taproot before bulking up and may flower little in year one; avoid transplanting once settled.
- Flopping in shade or rich soil — Low light and excess nutrients weaken stems; full sun on lean ground keeps it upright without staking.
- Minimal pest pressure — Largely trouble-free, but watch for occasional powdery mildew in crowded, humid plantings and space for airflow.
Propagation
Sow seed in autumn or after cold stratification, which improves germination. Established clumps may be divided in spring, though the deep taproot makes seed-raising the easier route. 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
White Wild Quinine is mildly toxic to pets. Parthenium integrifolium is not individually listed by the ASPCA's toxic or non-toxic plant database; treat with caution and verify with a vet. Like many Asteraceae, the genus contains sesquiterpene lactones that can cause contact dermatitis and may irritate the mouth or gut if chewed, so handle with gloves and keep pets from grazing it. 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.
White Wild Quinine care — frequently asked questions
What is the common name for Parthenium integrifolium?
Parthenium integrifolium is most commonly called White Wild Quinine, but it is also known as wild quinine, American feverfew, eastern feverfew. The names refer to the same species, so care instructions for White Wild Quinine apply identically to anything sold as wild quinine.
How much light does white wild quinine need?
White Wild Quinine grows best in direct sun (at least 4-6 hours). Full sun gives the strongest stems and longest bloom. It tolerates light shade but flowers less freely and may lean.
How often should I water white wild quinine?
Water white wild quinine water to establish, then sparingly; drought-tolerant once rooted. A deep-rooted prairie species that handles dry, average soils well. Avoid persistently wet ground; let soil dry between waterings. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.
Is white wild quinine toxic to cats and dogs?
White Wild Quinine is mildly toxic to pets. Parthenium integrifolium is not individually listed by the ASPCA's toxic or non-toxic plant database; treat with caution and verify with a vet. Like many Asteraceae, the genus contains sesquiterpene lactones that can cause contact dermatitis and may irritate the mouth or gut if chewed, so handle with gloves and keep pets from grazing it.
What USDA hardiness zone does white wild quinine grow in?
White Wild Quinine is rated for USDA zone 4-8 and RHS hardiness H6. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
White Wild Quinine deep-dive guides
Every aspect of white wild quinine care, each with its own calibrated guide:
- White Wild Quinine watering schedule
- White Wild Quinine light requirements
- Best soil mix for white wild quinine
- White Wild Quinine fertilizing guide
- When to repot white wild quinine
- How to propagate white wild quinine
- White Wild Quinine growth rate & size
- White Wild Quinine cold hardiness
- White Wild Quinine temperature & humidity
- Is white wild quinine toxic to cats & dogs?
- Is white wild quinine toxic to cats?
- Is white wild quinine toxic to dogs?
- Getting white wild quinine to bloom
Featured in these plant shortlists
White Wild Quinine qualifies for 4 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.
- 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.
- Browse all 29 plant shortlists — pet-safe, low-light, drought-tolerant and more
Related guides
White Wild Quinine is also known as wild quinine, American feverfew, and eastern feverfew.