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Krantz aloe

Krantz aloe

Aloe arborescens
Aloe arborescens (Krantz aloe, also candelabra aloe) is a large, multi-headed evergreen succulent shrub from southeastern southern Africa, growing 6.6 to 13.1 feet tall with branching stems topped by blue-green rosettes of toothed, recurved leaves. In winter it throws up unbranched, vivid red-orange flower racemes that draw sunbirds, butterflies, and bees, making it a strong structural and pollinator plant for frost-free Mediterranean and subtropical gardens or large containers. It is frost-tender: the RHS rates it H1b (hardy only to about 50 to 59°F), so outside roughly USDA zone 9b-11 it must be grown under glass or moved indoors for winter. The RHS flags it as harmful if eaten by people and pets - the bitter yellow leaf latex carries aloin (an anthraquinone laxative/irritant), distinct from the milder clear inner gel used traditionally in folk medicine. It is also noted as locally invasive where conditions are mild (e.g. Portugal), so site it thoughtfully in benign climates. Easily propagated from cuttings, it is widely planted in South Africa as a living security hedge around kraals.
Climate fit: narrow (26/100)
Structure
Focal point
Pollinator
Container
Light
Full sun
Water
Low water
Mature size
6.6-13.1 ft tall · 6 ft apart
Hardy in zones
9b-11
frosty to nearly frost-free winters
Life cycle
Perennial
AHS heat range
6-11
Plant range authored in AHS heat-zone terms.
Native in Illinois
No
The nectar-rich winter racemes are bird-pollinated in habitat (sunbirds) and also draw butterflies and bees; in cultivation set fruit is incidental and the plant is grown almost entirely from cuttings.

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 2 ecoregions - 2 climate-resilient through 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.

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 Cape honeysuckle (Tecomaria capensis) shrub with arching evergreen foliage and clusters of slender orange tubular flowers.
Tecomaria capensis
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Border
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Container
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Shrub
Full sun / Part shade
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Climate: narrow
Pollinator
Border
Structure
Focal point
Container
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Sasanqua camellia
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Shrub
Full sun / Part sun / Part shade
Moderate water
Zones 7a-9b
Climate: narrow
Border
Focal point
Structure
Container
Pollinator
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Shrub
Full sun / Part sun / Part shade
Moderate water
Zones 8a-11b
Climate: narrow
Structure
Focal point
Pollinator
Container
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Shrub
Full sun / Part sun
Moderate water
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Climate: narrow
Container
Focal point
Structure
Pollinator
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Shrubby scorpion vetch
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Shrub
Full sun / Part sun
Low water
Zones 7b-10b
Climate: narrow
Border
Focal point
Pollinator
Container
Structure

Educator packet

Plant packet
Krantz aloe educator packet
Aloe arborescens (Krantz aloe, also candelabra aloe) is a large, multi-headed evergreen succulent shrub from southeastern southern Africa, growing 6.6 to 13.1 feet tall with branching stems topped by blue-green rosettes of toothed, recurved leaves. In winter it throws up unbranched, vivid red-orange flower racemes that draw sunbirds, butterflies, and bees, making it a strong structural and pollinator plant for frost-free Mediterranean and subtropical gardens or large containers. It is frost-tender: the RHS rates it H1b (hardy only to about 50 to 59°F), so outside roughly USDA zone 9b-11 it must be grown under glass or moved indoors for winter. The RHS flags it as harmful if eaten by people and pets - the bitter yellow leaf latex carries aloin (an anthraquinone laxative/irritant), distinct from the milder clear inner gel used traditionally in folk medicine. It is also noted as locally invasive where conditions are mild (e.g. Portugal), so site it thoughtfully in benign climates. Easily propagated from cuttings, it is widely planted in South Africa as a living security hedge around kraals.
Scientific name
Aloe arborescens
Plant type
shrub
Hardiness
9b-11
Light
full-sun
Moisture
low
Spacing
6 ft
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). Krantz aloe (Aloe arborescens). Retrieved 2026, October 9, from https://plotwright.com/plants/aloe-arborescens
Sources used for this record
This record is compiled from the sources below.
Wikipedia (ecoregion articles)
Botanical research database
Plants of the World Online (POWO)
Botanical research database
RHS Find a Plant
Botanical research database
GBIF
Botanical research database
USDA PLANTS Database
Government data source
Wikimedia Commons
Photo
Plants For A Future
Botanical research database