Memento Belfast

Euphorbia Triangularis

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Euphorbia triangularis (African Milk Tree) 🌵🌿

Tall, sculptural, and full of attitude. Euphorbia triangularis brings serious presence with its upright, ridged stems and sharp architectural shape. Often mistaken for a cactus, this striking plant adds instant height and structure to any space — low effort, high impact.

It’s built for bright spots and busy people — the kind of plant that doesn’t need babysitting but still delivers the look.

Plant Care
  • Light: Loves bright light and can handle direct sun. The brighter the spot, the better it grows.
  • Watering: Let the soil dry out completely between waterings. Water sparingly, especially in winter.
  • Temperature: Prefers warm conditions (18–30°C). Protect from cold and frost.
  • Humidity: Not fussy — normal household humidity is perfect.
  • Feed: Use a cactus/succulent feed monthly during spring and summer.
Good to Know
  • Growth: Upright and fast-growing — great for adding height to a room.
  • Lookalike: Often mistaken for a cactus, but technically a Euphorbia.
  • Sap Warning: Produces a milky sap that can irritate skin and is toxic if ingested — handle with care.
  • Also Known As: African Milk Tree
  • Origin: Native to Central Africa

Pot 17cm x 45cm

Good To Know

Not a Diva

Nothing special on this leafy star's rider. Happy just to get on with life and do it's thing, like an old friend just hangin' out.

Not for Pets or Kids

Beautiful but with a dark side. The leaves and/or other parts of this plant can be toxic. Keep away from pets, children and adults who never grew up.

Bright, Indirect Light

Loves being in the spotlight. Thrives on attention. Just not direct sunlight, that’s where it draws the line. We’re glowing, not grilling.

How not to kill your Euphorbia Triangularis

We've created a personalised Grow Guide for your Euphorbia Triangularis. Just follow this easy guide and you & your new leafy mate will be loving life together!

Light: Direct

I love the light! A big ol' dose of bright, sunlight each day is my idea of heaven. I'm even up for some direct rays, just as long as it's not a scorcher. That said, I'm pretty adaptable. If light or dappled shade is all you've got, I won't complain.

Watering: Moderate

I'm a Moderate Molly! Not one for necking my drinks and shouting out for more, I'm much more about nursing mine and savouring every last drop. A gentle top-up once a week should be just fine for me, thanks.

Humidity: Normal

Atmospherics? I'm really not that bothered, actually. Just your everyday household humidity is fine. No extra attention required, thanks, so don't be comin' at me with that spritzer!

Top tips from our Agony Plant.

Stick it in your brightest spot and leave it alone. Overwatering is the only way to ruin this one, if in doubt, don’t water.

New home or buddy for your leafy mate?