Illustration
Orange Sovereign
Hippeastrum 'Orange Sovereign'
Orange Sovereign blooms from March through April.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Orange Sovereign
Plant it in part sun. It prefers moderate water. It is hardy in USDA zones 8–11. Expect it to reach about 20 in tall and 8 in wide at maturity, in roughly 2 years (a house reading).
What was checked
Fifteen fields were checked against named botanical sources, each recorded beside the sources that carried it, with every unsettled point written down and decided: mature height and spread, hardiness zones, sun, water, bloom months and color, the trait tags, soil, diseases, pests, toxicity, the plant's own names, and years to mature size, which rests on a recorded house rule where no publisher states one and is marked so. 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 Orange Sovereign
Orange Sovereign is a tender bulb, hardy in the ground only in zones 8 to 11: there it goes in during the cool season, typically November or December in zone 9, ahead of its March to April 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 Orange Sovereign get?
20 intall5 ft 7 inan adult8 inwideSee Orange Sovereign 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
Orange Sovereign's height, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil, diseases, pests and toxicity were checked against 20 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, water, bloom months and color, trait tags, soil, diseases, pests and toxicity
- amarylia.comAmaryliaheight, spread, hardiness zones, sun, water, bloom months and color, trait tags, soil and toxicity
- University of Florida IFASEDIS FP255height, spread, hardiness zones, sun, water, bloom months and color, soil, diseases and pests
- Missouri Botanical GardenPlant Finderheight, spread, hardiness zones, sun, water, bloom months and color, soil and pests
- University of Wisconsin HorticultureUniversity of Wisconsin-Madison Extensionheight, hardiness zones, water, bloom months and color, soil, diseases and pests
- Longfield Gardensspread, hardiness zones, sun, water, bloom months and color and soil
- bloomingbulb.comBlooming Bulbheight, hardiness zones, sun and bloom months and color
- plantcetera.comPlantceteraheight, hardiness zones, sun and bloom months and color
- amaryllis.comAmaryllis and Caladium Bulb Companyheight, bloom months and color and trait tags
- dutchbulbs.co.ukDutchBulbs.co.ukheight, spread, sun and trait tags
- farmergracy.co.ukFarmer Gracyheight, spread, sun and trait tags
- gchouston.orgThe Garden Club of Houston Bulb and Plant Martheight, sun and trait tags
- lancaster.unl.eduNebraska Extension in Lancaster Countybloom months and color and soil
- promessedefleurs.iePromesse de Fleursheight, spread and sun
- RHSRoyal Horticultural Societyheight, spread and sun
- Clemson Home and Garden Information CenterClemson Cooperative Extension HGIChardiness zones
- euroblooms.comEuroBloomsheight
- newyorkplantshq.comNew York Plants HQheight
- petpoisonhelpline.comPet Poison Helplinetoxicity
- rotteveelbulb.comRotteveel Bulb Companyheight
How the checking works, and what each standard covers, is on the verified plants page.
Good to know about Orange Sovereign
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Safety
Toxic to dogs, cats, horses and people; all parts are poisonous, the bulb most of all. The toxins are lycorine and related alkaloids. Eating it brings vomiting and drooling. per ASPCA
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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.