Illustration
Admiral
Anemone coronaria 'Admiral'
Admiral blooms from March through May.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Admiral
Plant it in full sun. It prefers moderate water. It is hardy in USDA zones 7–10. Expect it to reach about 12 in tall and 6 in wide at maturity, in roughly 1 year (a house reading).
What was checked
Mature height and spread, hardiness zones, sun, water, bloom months and color and the trait tags were checked against named botanical sources for this plant, with what the sources could not settle written down; years to mature size rests on a recorded house rule where no publisher states one, and is marked so; its common name and alternate names have not been checked yet. 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 Admiral
Admiral is a fall-planted bulb: get it in the ground 6 to 8 weeks before the ground freezes, typically October or November in zone 8, the middle of its hardy zones 7 to 10. It pays you back the following March to May.
Month-by-month timing for your zone is on the planting calendar; if you garden near zone 8, the middle of this plant's hardy range, start with zone 8 in October. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Admiral get?
12 intall5 ft 7 inan adult6 inwideSee Admiral 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
Admiral's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 9 published sources on August 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.
- NC State ExtensionPlant Toolboxheight, spread, hardiness zones, sun, bloom months and color, soil, diseases, pests and toxicity
- Missouri Botanical GardenPlant Finderheight, spread, hardiness zones, sun, water, bloom months and color, soil and diseases
- RHSRoyal Horticultural Societyheight, spread, sun, bloom months and color, trait tags, soil, diseases and pests
- Brent and Becky's Bulbsheight, hardiness zones, sun, water, bloom months and color and trait tags
- flowerbulbs.comthe Dutch flower bulb sector's own information portal, iBulb / Royal A...height, bloom months and color and trait tags
- nijssenbulbs.comPeter C. Nijssen (Nijssen Tuin & Bulbs, Heemstede)height and bloom months and color
- John ScheepersInc.height and trait tags
- Brent and Becky's Bulbsheight
- poisonousplants.ansci.cornell.eduCornell University Department of Animal Science, Plants Poisonous to L...toxicity
How the checking works, and what each standard covers, is on the verified plants page.
Good to know about Admiral
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Safety
All parts are poisonous. The sap holds protoanemonin, a vesicant: it reddens, swells and blisters skin, and eating it causes mouth pain, vomiting and diarrhea. per NC State and Cornell
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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.