Illustration
White Ranunculus
Ranunculus asiaticus
White Ranunculus blooms from April through May.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing White Ranunculus
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 8–10. Expect it to reach about 16 in tall and 6 in wide at maturity, in roughly 1 year (a house reading).
Is White Ranunculus toxic to dogs or cats?
- Listed as toxic to dogs and cats by NC State Extension and Royal Horticultural Society.
- Listed as poisonous to people by NC State Extension and Royal Horticultural Society.
Lists differ and none is complete. If a pet eats a plant and seems unwell, call a veterinarian or a pet poison helpline.
What was checked
Nine facts were checked against named botanical sources, each recorded beside the sources that carried it: mature height and spread, hardiness zones, sun, water, bloom months and color, the trait tags, and years to mature size, which rests on a recorded house rule where no publisher states one and is marked so. Soil, diseases, pests, toxicity and the plant's own names have not yet been read for this plant, and its trait tags are the ones a feature uses rather than every word a page prints. Each fact above carries its own mark. The planting, spacing and size sections are derived from these checked facts by a fixed rule, not checked separately, and the plant type is the library's own classification.
When to plant White Ranunculus
White Ranunculus is a tender bulb, hardy in the ground only in zones 8 to 10: there it goes in during the cool season, typically November or December in zone 9, ahead of its April to May bloom. Colder than zone 8 it will not survive winter in the ground, so grow it in a pot that comes indoors before frost, or plant it out in spring for one season.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 9, the middle of this plant's hardy range, start with zone 9 in November. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does White Ranunculus get?
16 intall5 ft 7 inan adult6 inwideSee White Ranunculus in a garden plan: the planner shows it in 3D beside everything else you add, growing toward this size over the years.
Where these facts come from
White Ranunculus' height, spread, hardiness zones, sun, water, bloom months and color and trait tags were checked against 9 published sources on October 23, 2026. Each one is linked below with every fact it carried, which can include a fact this page still marks as not yet checked, because a source carrying a value is not the same as the value being held to the standard. Facts not in that list, and the planting, spacing and size sections, are not covered by these sources.
- Missouri Botanical Gardenheight, spread, hardiness zones, sun, water and bloom months and color
- NC State Extensionheight, spread, hardiness zones, sun, water and trait tags
- edenbrothers.comEden Brothersheight, hardiness zones, sun, water and trait tags
- angliabulbs.comAnglia Bulb Companyheight, sun and water
- plantdatabase.kpu.caKwantlen Polytechnic Universityheight, spread and sun
- Chicago Botanic Gardenbloom months and color
- digitalcommons.usu.eduUtah State University Extensionbloom months and color
- RHSRoyal Horticultural Societysun
- University of Illinois Extensionsun
How the checking works, and what each standard covers, is on the verified plants page.
Good to know about White Ranunculus
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Safety
All parts are poisonous, and it is toxic to dogs, cats and horses. Crushed or chewed fresh tissue releases an irritant that burns skin, mouth and gut. per ASPCA and NC State
Explore similar plants
You might also like
Design a garden with this
Drop this plant onto a 3D plan, see how it fills in, and watch your whole garden bloom across the year.