African milk tree vs Mistletoe cactus

Euphorbia trigona · Rhipsalis baccifera

Pet safety: Mistletoe cactus is listed non-toxic to cats and dogs; African milk tree is toxic (diterpene esters in the latex).

Why these two get mixed up

Both are sold as "cactus". That is not a nickname problem — a plant labelled cactus in a shop could be either of these, and they want different things.

African milk tree (Euphorbia trigona) — **African milk tree** — Euphorbia trigona. Photograph by Frank Vincentz, Wikimedia Commons , CC BY-SA 3.0.

Mistletoe cactus (Rhipsalis baccifera) — **Mistletoe cactus** — Rhipsalis baccifera. Photograph by Raffi Kojian, Wikimedia Commons , CC BY-SA 3.0.

	African milk tree	Mistletoe cactus
Scientific name	Euphorbia trigona	Rhipsalis baccifera
Family	Euphorbiaceae	Cactaceae
Light floor	Bright indirect	Medium
Water	14–28 days	7–14 days
Humidity floor	20%	45%
Mature height	24–96 in	12–72 in
Habit	upright	trailing
Growth rate	moderate	moderate
Difficulty	Easy	Easy
Toxic to pets	Yes	No
Typical price	$15–45	$15–45

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. Mistletoe cactus is listed non-toxic to cats and dogs; African milk tree is toxic (diterpene esters in the latex). If the two are sold under the same name, a mislabelled plant is a genuine risk in a house with animals.

Mature size

African milk tree reaches about 96 inches; Mistletoe cactus tops out near 72. Buying the wrong one for a shelf means rehoming it in a year.

Light

Mistletoe cactus tolerates medium light; African milk tree needs bright-indirect as a floor. Put the second in the first's spot and it stretches and declines.

Watering

Mistletoe cactus wants water every 7–14 days, African milk tree every 14–28. On one shared watering schedule, one of them drowns.

Habit

African milk tree grows upright; Mistletoe cactus grows trailing. That decides where each one physically works.

Humidity

Mistletoe cactus wants a floor of 45%; African milk tree copes at 20%. In a heated room in winter that gap is the difference between crisp edges and none.

Not even related

African milk tree is Euphorbiaceae, Mistletoe cactus is Cactaceae. They share a shop label and nothing else — different families, different continents, different care.

Which should you buy?

With a cat or dog in the house, take Mistletoe cactus. 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 Mistletoe cactus.
If you forget to water, take African milk tree, which goes 18 days between drinks.
If it is your first plant, take Mistletoe cactus, at 1 of 5.
For a small shelf, take Mistletoe cactus, which stops around 72 inches.

Full entries

African milk tree — care fields with sources, toxicity with every authority consulted, propagation and diagnosis. Mistletoe cactus — the same.

Sources

This database's own care records for Euphorbia trigona and Rhipsalis baccifera — every figure compared above.
Royal Botanic Gardens Kew, Plants of the World Online — accepted names and families for Euphorbia trigona and Rhipsalis baccifera
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.