Mexican snowball vs Flaming Katy

Echeveria elegans · Kalanchoe blossfeldiana

Pet safety: Mexican snowball is listed non-toxic to cats and dogs; Flaming Katy is toxic (bufadienolide cardiac glycosides). 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

Flaming Katy is recorded here as a pet-safe alternative to Mexican snowball, so the question is usually whether the swap is actually a fair one.

Mexican snowball (Echeveria elegans) — **Mexican snowball** — Echeveria elegans. Photograph by Diego Delso, Wikimedia Commons , CC BY-SA 3.0.

Flaming Katy (Kalanchoe blossfeldiana) — **Flaming Katy** — Kalanchoe blossfeldiana. Photograph by Cdpanic at English Wikipedia, Wikimedia Commons , CC BY-SA 3.0.

	Mexican snowball	Flaming Katy
Scientific name	Echeveria elegans	Kalanchoe blossfeldiana
Family	Crassulaceae	Crassulaceae
Light floor	Bright indirect	Bright indirect
Water	12–24 days	9–16 days
Humidity floor	20%	20%
Mature height	3–8 in	6–18 in
Habit	rosette	upright
Growth rate	slow	moderate
Difficulty	Moderate	Easy
Toxic to pets	No	Yes
Typical price	$6–18	$6–20

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. Mexican snowball is listed non-toxic to cats and dogs; Flaming Katy is toxic (bufadienolide cardiac glycosides). If the two are sold under the same name, a mislabelled plant is a genuine risk in a house with animals.

Habit

Mexican snowball grows rosette; Flaming Katy grows upright. That decides where each one physically works.

Which should you buy?

With a cat or dog in the house, take Mexican snowball. 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 either — both have a bright-indirect light floor.
If you forget to water, take Mexican snowball, which goes 16 days between drinks.
If it is your first plant, take Flaming Katy, at 2 of 5.
For a small shelf, take Mexican snowball, which stops around 8 inches.

Full entries

Mexican snowball — care fields with sources, toxicity with every authority consulted, propagation and diagnosis. Flaming Katy — the same.

Sources

This database's own care records for Echeveria elegans and Kalanchoe blossfeldiana — every figure compared above.
Royal Botanic Gardens Kew, Plants of the World Online — accepted names and families for Echeveria elegans and Kalanchoe blossfeldiana
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.