Illustration
Purple Calla
Zantedeschia 'Purple Sensation'
Purple Calla blooms from June through August.
Months here are Northern Hemisphere months; in the Southern Hemisphere, shift them by six months.
Growing Purple Calla
Plant it in part sun. It prefers high water. It is hardy in USDA zones 8–10. Expect it to reach about 24 in tall and 12 in wide at maturity, in roughly 1 year (a house reading).
Is Purple Calla 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 Purple Calla
Purple Calla is tender: plant it out after the last frost, once the soil has warmed. In zone 9, the middle of its hardy zones 8 to 10, that means February or March; where spring comes later, it goes out later. Expect flowers from June to August.
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 February. Derived from the plant's category, zones and bloom months plus typical zone frost dates, not checked separately.
How big does Purple Calla get?
24 intall5 ft 7 inan adult12 inwideSee Purple Calla 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
Purple Calla's height, spread, hardiness zones, sun, water, bloom months and color and trait tags were checked against 6 published sources on October 20, 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.
- American Meadowsheight, hardiness zones, sun, water, bloom months and color and trait tags
- dutchbulbs.comK. van Bourgondienheight, sun, bloom months and color and trait tags
- precious-plants.co.ukPrecious Plantsheight, spread, sun, water and trait tags
- tulipworld.comTulip Worldheight, hardiness zones, sun and bloom months and color
- jparkers.co.ukJ. Parker'sheight, spread and bloom months and color
- NC State Extensionsun
How the checking works, and what each standard covers, is on the verified plants page.
Good to know about Purple Calla
Curated from university extensions, botanic gardens and other primary sources, with the source named on every note.
Safety
Every part is toxic to dogs, cats, horses and people. The calcium oxalate crystals cause intense mouth and throat burning, drooling, swelling and vomiting. per ASPCA and NC State
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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.