How to care for Devil's Backbone
Euphorbia tithymaloides · Euphorbiaceae
Its stems zigzag from leaf to leaf like a crooked spine, carrying waxy green foliage that flushes white and pink in the variegated forms. A Caribbean and Central American native, it is more shade-tolerant and moisture-tolerant than desert euphorbias, making it an easy sculptural houseplant. The milky sap is still an irritant, true to the family. Water roughly every 10 days while it's growing (about every 21 in winter), give it bright, indirect light, kept above 55°F (13°C) — average room humidity suits it.
Care at a glance
Water once the top few centimeters are dry; it likes slightly more regular moisture than desert succulents but never wet feet.
Bright indirect light with a little gentle direct sun gives the best zigzag density and pink variegation.
Half-strength balanced fertilizer monthly through spring and summer.
Mistakes that kill this plant
- Cold drafts by a winter window — it is more tropical than it looks.
- Waterlogged soil in a heavy mix.
- Snapping stems bare-handed; the sap can blister skin and harm pets.
Seasonal tips
- Pinch stem tips in spring to encourage branching and a fuller shape.
- Some winter leaf drop is normal; hold back water until spring growth resumes.
- Give variegated forms a touch more light to hold their pink tones.
Is it safe for pets?
We have Devil's Backbone recorded as toxic to cats and dogs.
Full pet-safety details for cats & dogsCare for your Devil's Backbone on autopilot
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Toxicity here is informational, not a safety guarantee. Those are our own records, compiled by following the ASPCA's published toxic and non-toxic plant lists and Pet Poison Helpline's plant poison list rather than copied from them — confirm anything that matters against the ASPCA's published lists, which this one is matched to, or with your vet. If your pet ingested this plant, contact your vet or the ASPCA Animal Poison Control Center at (888) 426-4435.