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...
Where this plant fits
Suitable across 9 ecoregions - 7 climate-resilient through 2070 · 2 newly possible by 2070. Best matches first.
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.
Better fit now and in 2050
Now: well-suited
2050: well-suited
Better fit now and in 2050
Now: well-suited
2050: well-suited
Better fit now and in 2050
Now: well-suited
2050: well-suited
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.
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.









