Repotting guide

When & how to repot Candelabra Euphorbia (Euphorbia candelabrum)

Also called candelabra tree, African candelabra.

More about candelabra euphorbia

About Candelabra Euphorbia

Euphorbia candelabrum · also called candelabra tree, African candelabra · houseplant

Candelabra Euphorbia is a large, columnar succulent spurge from East Africa whose ribbed, branching arms mimic a true cactus. Grown indoors as a bold architectural specimen, it needs bright light, gritty soil and infrequent watering. Its copious milky latex is highly irritating to skin, eyes and pets, so handle it with real care.

Mature size: Reaches 1-2 m indoors over many years; in the wild it can grow into a tree several metres tall.

Watch for — Stem rot from overwatering: Soft, yellowing or blackening at the base signals rot. Water only when fully dry and ensure the pot drains freely.

How to tell candelabra euphorbia needs repotting

Repotting on a calendar is less reliable than reading the plant. For candelabra euphorbia, watch for these signs:

Roots growing out of the drainage holes, or the rootball lifting the plant proud of the rim.
Soil that has shrunk away from the pot sides and no longer holds water.
The pot is unstable because the plant has grown top-heavy.
Old, compacted, broken-down mix that stays wet too long — for a succulent that is a rot risk, so refresh it even if the pot size is fine.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot candelabra euphorbia

Every 2–3 years, into bone-dry mix. Candelabra Euphorbia's growth habit — an upright, tree-like succulent with a central trunk and ribbed, candelabra-branching green arms, slow indoors but capable of becoming very large in habitat. — sets the pace. Candelabra Euphorbia is a large, columnar succulent spurge from East Africa whose ribbed, branching arms mimic a true cactus. Grown indoors as a bold architectural specimen, it needs bright light, gritty soil and infrequent watering. Its copious milky latex is highly irritating to skin, eyes and pets, so handle it with real care.

What size pot to step candelabra euphorbia up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Candelabra Euphorbia stores water and rots in a large pot of slow-drying soil. A tight terracotta pot that dries fast is far safer than a generous plastic one. Never up-pot a succulent by several sizes.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot candelabra euphorbia

Spring or summer, while candelabra euphorbia is in active growth and warm, is best — roots recover fastest then, and the plant is not sitting in cool damp soil. Avoid repotting a succulent in winter dormancy.

Step-by-step: repotting candelabra euphorbia

Repot dry. Do not water candelabra euphorbia for several days first. Working with dry roots and dry mix dramatically lowers the rot risk for a succulent.
Pick a snug, fast-draining pot. Choose terracotta one size up at most, with a drainage hole. Have gritty gritty, fast-draining cactus mix ready.
Tip it out and clean the roots. Slide the plant out, crumble off the old soil, and trim any black, mushy or dead roots with clean snips.
Pot into dry mix. Set candelabra euphorbia at its original depth in dry gritty mix, firming gently. Do not bury the stem deeper than it was.
Wait a week before watering. Leave it completely dry and out of harsh sun for about 7 days so any damaged roots callus. Only then water lightly.

Aftercare

Keep candelabra euphorbia completely dry and out of fierce sun for about a week so any nicked roots callus before they meet moisture; watering a freshly repotted succulent is the classic way to rot it. Then resume the normal lean, dry rhythm. Do not fertilise for about 3 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for candelabra euphorbia

Candelabra Euphorbia wants gritty, fast-draining cactus mix. Blend cactus compost with about one-third pumice, coarse grit or perlite. A heavy terracotta pot resists toppling as the plant grows tall and adds stability. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting candelabra euphorbia — frequently asked questions

How often should you repot candelabra euphorbia?

Every 2–3 years, into bone-dry mix for candelabra euphorbia. Repot candelabra euphorbia every 2–3 years into a snug pot of gritty, fast-draining cactus mix, ideally in spring or summer. Let it sit in dry soil and do not water for about a week afterwards so any nicked roots can callus. Over-potting and watering straight away is what rots succulents.

What size pot does candelabra euphorbia need?

When is the best time of year to repot candelabra euphorbia?

Should you water candelabra euphorbia after repotting?

No — not straight away. Repot candelabra euphorbia into dry mix and wait about a week before the first watering so any damaged roots callus over. Watering a freshly repotted succulent is the single most common way to rot one.

Should you fertilise candelabra euphorbia after repotting?

Not immediately. Wait about 3 weeks after repotting candelabra euphorbia. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.