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Golden calla

Golden calla

Zantedeschia elliottiana
Golden calla is a tuberous perennial in the arum family (Araceae) grown for its large, brilliant golden-yellow funnel-shaped spathes - typically marked with a deep purple blotch at the base and wrapping a matching yellow spadix - held on stout stems above deep-green, white-spotted leaves in summer. Its wild origin is genuinely uncertain: it is said to occur in Mpumalanga province (former Transvaal), South Africa, but credible sources treat it as a garden plant of unknown parentage with no confirmed wild population (Wikipedia). In the garden it is a bold container and border accent for zones 8-10, and it overwinters as a lifted tuber in colder climates. The honest catch is threefold: every part is toxic (calcium-oxalate raphides cause intense oral burning - hazardous to children, pets, and livestock), the plant is frost-tender (RHS H1C) and must be lifted and stored dry below about zone 9, and it dislikes sitting in wet soil during dormancy - distinctly more drought-tolerant but more rot-prone than its white-spathed cousin Z. aethiopica.
Climate fit: narrow (21/100)
Focal point
Container
Border
Light
Full sun / Part sun
Water
Moderate water
Mature size
1.5-3 ft tall · 18" apart
Hardy in zones
8a-10b
cold to mild winters
Native in Illinois
No
All parts of Zantedeschia elliottiana - tubers, leaves, spathe, spadix, and berries - contain insoluble calcium-oxalate crystals (raphides).

Cold hardiness

These values are location-based: this location's current hardiness is the baseline, and the 2050 value is a projected future climate for this same location.
Now
Zone 6b
Plotwright
USDA Zone 6b
-5°F to 0°F
Won't grow here
Zone 7a
Plotwright
0°F to 5°F
Won't grow here
In plain terms: This location has cold winters. Its winters are projected to keep warming through 2050.
Out of range today and still out of range in 2050.

Heat tolerance

Heat tolerance values are location-based too: heat days today are observed at this site, and the 2050 value projects this same location under a future climate.
Loading AHS heat-zone data for this location...

Plant this, not that

Better fit for this place
For Chicago, IL, these are replacement suggestions: similar plants with a stronger hardiness fit now and/or in 2050.
Two pure white Easter lily (Lilium longiflorum) flowers held horizontally, each a long narrow trumpet flaring into six waxy recurved lobes, with a green-white style and bright yellow anthers inside. Rain droplets stand on the petals; a third unopened trumpet points away behind, over dark foliage.
Lilium longiflorum
Easter lily
Easter lily reaches most people the way almost nothing else in this catalog does: as a forced gift plant in a foil-wrapped pot, in full white trumpet in March or April, months before its real season. Left to itself in a garden Lilium longiflorum flowers in July and August, and Missouri Botanical Garden files it under the plainer name trumpet lily. Everything about the pot version is engineered - bulbs lifted in autumn from a narrow strip of the California and Oregon coast, cooled, potted, held under a temperature schedule that lands the buds on a date that moves by up to five weeks a year, and kept short with growth retardants. That is why the plant you were given is 16 to 20 inches tall and the same plant in the ground is 2 to 3 feet. The single most important sentence in this record is not horticultural. This is the species behind the veterinary literature on feline lily poisoning: every part of it, including the pollen and the water in the vase, causes acute kidney injury in cats, less than one leaf can be enough, and untreated cases die in 36 to 72 hours. It is also the lily that enters houses in quantity, which is the whole problem. If there is a cat in the house, this plant does not come in the door. Beyond that, be clear about what it is not. It is not a hardy garden bulb in the way the regal lily in this wave is - Missouri Botanical Garden rates it zone 4 to 8, which is the most generous number in circulation for a subtropical island endemic, and much US extension guidance says 5 to 8. It is not a widespread wild species either: Kew's native range is the Ryukyu Islands, Taiwan, southern Japan and the Philippines, and nothing else. A globally traded flower with a natural range you could drive across in a day.
Perennial
Full sun / Part shade
Moderate water
Zones 4a-8b
Climate: narrow
Focal point
Border
Container
Better fit now and in 2050
Now: well-suited
2050: well-suited

Similar plants

Browse lateral options with similar roles, light needs, size, or native-range overlap; these are not filtered for a better climate fit.
A pineapple lily (Eucomis comosa) showing a basal rosette of strap-shaped leaves and an upright spike densely packed with pale star-shaped flowers topped by a tuft of leafy bracts.
Eucomis comosa
Pineapple lily
Eucomis comosa, the pineapple lily or wine eucomis, is a deciduous summer-growing bulb in the asparagus family (Asparagaceae), endemic to the Eastern Cape and KwaZulu-Natal provinces of South Africa. From a large, often purple bulb it sends up a basal rosette of strap-shaped leaves and a stout flower spike packed with white-to-purple star flowers, crowned by a tuft of leafy bracts that gives it a pineapple-like silhouette in mid-to-late summer. It is a striking focal-point and container subject for borders, prized for its long-lasting bloom. Hardiness is the load-bearing caution: it is frost-tender to only borderline-hardy (RHS H4, roughly USDA 8–10, surviving brief dips near 23 to 14°F in well-drained, sheltered ground), so in colder climates it is grown in pots and lifted or moved under cover for winter, and it resents winter wet. The bulb and foliage contain saponins and can cause mild mouth irritation, drooling, and stomach upset if eaten, so keep it away from pets and children.
Perennial
Full sun / Part sun
Moderate water
Zones 8a-10b
Climate: narrow
Focal point
Container
Border
Pollinator
A single orange-red Barberton daisy (Gerbera jamesonii) flowerhead with slender ray florets radiating around a central disc, on a leafless stalk.
Gerbera jamesonii
Barberton daisy
Gerbera jamesonii, the Barberton daisy (also Transvaal daisy), is a tufted evergreen perennial herb in the daisy family (Asteraceae) native to the summer-rainfall grasslands and rocky woodland of north-eastern South Africa and Eswatini. It forms a basal rosette of lobed leaves from which leafless flowering scapes rise, each topped by a single large daisy-style flowerhead in orange-red, yellow, pink, or white. It is the wild ancestor of the thousands of florist gerbera cultivars and earns its place as a long-blooming focal point in borders and patio containers, attractive to bees and other insects. The load-bearing caution is frost-tenderness: RHS rates it H1C, meaning it survives outdoors only in summer or the very mildest, frost-free spots and must be overwintered under glass elsewhere (roughly USDA 9-11). It is non-toxic, with no reported poisoning hazard to people or pets, making it a safe choice where toxicity is a concern.
Perennial
Full sun / Part sun
Moderate water
Zones 9a-11
Climate: narrow
Border
Container
Focal point
Pollinator
Wild Ranunculus asiaticus in flower on Akamas Peninsula, Cyprus - pale cream single flower with dark button centre above deeply lobed, hairy foliage
Ranunculus asiaticus
Persian Buttercup
Persian buttercup is a tuberous herbaceous perennial native to the eastern Mediterranean - from Cyprus, Crete, and Turkey across to Iran, Iraq, and the Levant - where it blooms in rocky scrub and meadows in late winter through spring. In gardens it is prized for its luminous, poppy-like flowers in red, orange, pink, yellow, and white (wild single forms) or the dense, multi-layered doubles of commercial 'Tecolote' and 'Bloomingdale' strains beloved by florists. The honest catch is its frost-tenderness: the tubers are killed below roughly 14°F, so gardeners in USDA zones 7 and colder must lift and store them after foliage dies down each summer, and the whole plant contains protoanemonin, a skin and gut irritant toxic to humans and livestock on contact or ingestion.
Perennial
Full sun / Part sun
Moderate water
Zones 8b-10b
Climate: narrow
Border
Container
Focal point
Filler
A clump of Aloe maculata succulents with broad, pale-spotted green leaves and tall branched stalks topped by flat-headed clusters of orange-red tubular flowers.
Aloe maculata
Soap aloe
Aloe maculata (soap aloe, also called zebra aloe; long sold as Aloe saponaria) is a clumping, stemless succulent from southern Africa with broad, triangular leaves marked by distinctive "H-shaped" pale spots. It is grown for its flat-topped racemes of tubular flowers in shades of orange-red to coral and yellow, held on tall branched stalks that draw sunbirds, bees, and other insects. A tough, drought- and salt-tolerant groundcover that spreads by suckers, it suits rock gardens, dry borders, coastal plantings, and containers in warm climates. It is frost-tender: the RHS rates it H1C (roughly USDA 9b-11), so leaves are damaged below freezing and it needs protection or indoor wintering where frosts occur. The leaf gel is used traditionally for skin and other ailments, but the plant is recorded as harmful if eaten (handle with care; seeds are reputedly poisonous), so treat it as not for casual consumption around people and pets.
Perennial
Full sun / Part sun
Low water
Zones 9b-11
Climate: narrow
Focal point
Border
Container
Pollinator
Structure
David viburnum (Viburnum davidii) foliage - a dense mass of large, glossy, dark green evergreen leaves, each with three prominent veins deeply impressed along its length, and reddish young stems and leaf stalks at the shoot tips.
Viburnum davidii
David viburnum
David viburnum is a compact, mound-forming evergreen shrub native to western China (its provenance usually given as the Sichuan / Yunnan region), grown for its bold, deeply three-veined glossy leaves, small clusters of white flowers in late spring, and - when fruiting - striking oval drupes in a distinctive metallic turquoise-blue. It holds the RHS Award of Garden Merit and suits the front of borders, shaded corners, and containers in cool-temperate to mild climates. The honest catch is a fundamental one: it is dioecious, so you must plant at least one male and one female together to get the celebrated blue fruit - a single plant in isolation will never berry, and many gardeners discover this only after years of waiting.
Shrub
Full sun / Part sun / Part shade
Moderate water
Zones 7a-9b
Climate: narrow
Border
Structure
Container
Focal point
Buxus microphylla shrub showing dense compact habit and small oval glossy leaves, photographed at Dendrological Garden in Przelewice, Poland
Buxus microphylla
Japanese Box
Japanese box is a compact, dense evergreen shrub long cultivated in Japan (where it was first described from cultivated plants of uncertain wild origin) with truly wild populations known from Taiwan, used for centuries for topiary, low hedging, and bonsai. Its fine-textured small leaves and naturally tidy habit make it one of the most widely planted formal garden shrubs in temperate regions, and the 'Faulkner' cultivar holds the RHS Award of Garden Merit. The honest catch is a double threat: all parts contain steroidal alkaloids (cyclobuxine) and are toxic to humans and livestock, and the species is under sustained pressure from box blight (Calonectria pseudonaviculata) and the box tree moth (Cydalima perspectalis), with B. microphylla documented as more susceptible than the common European B. sempervirens, so an established hedge can be defoliated within weeks.
Shrub
Full sun / Part sun / Part shade
Moderate water
Zones 5a-9b
Climate: narrow
Structure
Border
Container
Focal point

Educator packet

Plant packet
Golden calla educator packet
Golden calla is a tuberous perennial in the arum family (Araceae) grown for its large, brilliant golden-yellow funnel-shaped spathes - typically marked with a deep purple blotch at the base and wrapping a matching yellow spadix - held on stout stems above deep-green, white-spotted leaves in summer. Its wild origin is genuinely uncertain: it is said to occur in Mpumalanga province (former Transvaal), South Africa, but credible sources treat it as a garden plant of unknown parentage with no confirmed wild population (Wikipedia). In the garden it is a bold container and border accent for zones 8-10, and it overwinters as a lifted tuber in colder climates. The honest catch is threefold: every part is toxic (calcium-oxalate raphides cause intense oral burning - hazardous to children, pets, and livestock), the plant is frost-tender (RHS H1C) and must be lifted and stored dry below about zone 9, and it dislikes sitting in wet soil during dormancy - distinctly more drought-tolerant but more rot-prone than its white-spathed cousin Z. aethiopica.
Scientific name
Zantedeschia elliottiana
Plant type
perennial
Hardiness
8a-10b
Light
full-sun, part-sun
Moisture
moderate
Spacing
18 inches
Classroom prompts
- Which plant traits are observations, and which are care recommendations?
- How would this plant fit change if the garden location moved warmer, colder, wetter, or drier?
- Which source-backed facts would you cite in a lesson handout?
Use the Sources & citations section below for page citation styles and the field-level source list.

Sources & citations

Cite this page
For lesson plans, articles, or research that uses this page. Use the source cards below to explore the references that informed this record.
Plotwright. (2026, May 17). Golden calla (Zantedeschia elliottiana). Retrieved 2026, August 20, from https://plotwright.com/plants/zantedeschia-elliottiana
Sources used for this record
This record is compiled from the sources below.
RHS Find a Plant
Botanical research database
GBIF
Botanical research database
Wikipedia (ecoregion articles)
Botanical research database
Wikimedia Commons
Photo · CC BY-SA 4.0