Aloe vera vs Zebra haworthia

Aloe vera · Haworthiopsis attenuata

Pet safety: Zebra haworthia is listed non-toxic to cats and dogs; Aloe vera is toxic (saponins, anthraquinones). If the two are sold under the same name, a mislabelled plant is a genuine risk in a house with animals.

Why these two get mixed up

Zebra haworthia is recorded here as a pet-safe alternative to Aloe vera, so the question is usually whether the swap is actually a fair one.

Aloe vera (Aloe vera) — **Aloe vera** — Aloe vera. Photograph by Forest & Kim Starr, Wikimedia Commons , CC BY 3.0.

Zebra haworthia (Haworthiopsis attenuata) — **Zebra haworthia** — Haworthiopsis attenuata. Photograph by Wikimedia Commons contributor, Wikimedia Commons , CC BY-SA 3.0.

	Aloe vera	Zebra haworthia
Scientific name	Aloe vera	Haworthiopsis attenuata
Family	Asphodelaceae	Asphodelaceae
Light floor	Bright indirect	Medium
Water	14–28 days	14–24 days
Humidity floor	20%	20%
Mature height	12–24 in	4–8 in
Habit	rosette	rosette
Growth rate	slow	slow
Difficulty	Easy	Easy
Toxic to pets	Yes	No
Typical price	$10–30	$8–25

Highlighted cells are where the two actually differ. Everything else they share.

The differences that matter

Pet safety

This is the difference that matters most. Zebra haworthia is listed non-toxic to cats and dogs; Aloe vera is toxic (saponins, anthraquinones). If the two are sold under the same name, a mislabelled plant is a genuine risk in a house with animals.

Light

Zebra haworthia tolerates medium light; Aloe vera needs bright-indirect as a floor. Put the second in the first's spot and it stretches and declines.

Which should you buy?

With a cat or dog in the house, take Zebra haworthia. The other is toxic, and if the shop label is wrong you will not know which you have brought home.
In a dim room, take Zebra haworthia.
If you forget to water, take Aloe vera, which goes 21 days between drinks.
If it is your first plant, take either — both score 1 of 5.
For a small shelf, take Zebra haworthia, which stops around 8 inches.

Full entries

Aloe vera — care fields with sources, toxicity with every authority consulted, propagation and diagnosis. Zebra haworthia — the same.

Sources

This database's own care records for Aloe vera and Haworthiopsis attenuata — every figure compared above.
Royal Botanic Gardens Kew, Plants of the World Online — accepted names and families for Aloe vera and Haworthiopsis attenuata
ASPCA Animal Poison Control — toxicity classification for both, cited on each species entry
Photographs: Wikimedia Commons, individually credited and licensed above

Compiled and edited by Tony Valcarcel · 2026-09-12
Every comparison above is drawn from a recorded field. Where the honest distinguisher is visual we show both photographs rather than describing a leaf we have no field for. How this is sourced.