Growli

Plant care

White Wild Quinine (wild quinine) care

Parthenium integrifolium

Also called wild quinine, American feverfew, eastern feverfew.

RHS H6USDA 4-8Mildly toxic to petsIndoor 90-150 cm (3-5 ft) tall

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 irritationSap and rough foliage can irritate sensitive skin; wear gloves when cutting or handling it.
  • Slow to establishIt builds a deep taproot before bulking up and may flower little in year one; avoid transplanting once settled.
  • Flopping in shade or rich soilLow light and excess nutrients weaken stems; full sun on lean ground keeps it upright without staking.
  • Minimal pest pressureLargely 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:

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:

Related guides

White Wild Quinine is also known as wild quinine, American feverfew, and eastern feverfew.