Repotting guide

When & how to repot Euphorbia gorgonis (Euphorbia gorgonis)

Also called gorgon's head euphorbia.

More about euphorbia gorgonis

About Euphorbia gorgonis

Euphorbia gorgonis · also called gorgon's head euphorbia · houseplant

Euphorbia gorgonis, the gorgon's head, is a South African medusoid succulent: a fat central body crowned by a ring of radiating, snake-like tuberculate arms. It is forgiving for a Euphorbia, asking for bright light, a gritty mix and sparse water. The milky sap is irritant, so glove up. A characterful, slow, architectural succulent for a sunny sill.

Mature size: Reaches roughly 15-25 cm across with a low profile, the arms spreading outward almost flat to the soil.

Watch for — Stretched arms: Long, pale, elongated arms losing the flat radiating pattern indicate too little light. Move to the brightest spot available.

How to tell euphorbia gorgonis needs repotting

Repotting on a calendar is less reliable than reading the plant. For euphorbia gorgonis, 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 euphorbia gorgonis

Every 2–3 years, into bone-dry mix. Euphorbia gorgonis's growth habit — medusoid caudiciform succulent: a squat central body surrounded by a flat, radiating crown of finger-like tuberculate branches; very slow, forming a low rosette over years. — sets the pace. Euphorbia gorgonis, the gorgon's head, is a South African medusoid succulent: a fat central body crowned by a ring of radiating, snake-like tuberculate arms. It is forgiving for a Euphorbia, asking for bright light, a gritty mix and sparse water. The milky sap is irritant, so glove up. A characterful, slow, architectural succulent for a sunny sill.

What size pot to step euphorbia gorgonis up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Euphorbia gorgonis 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 euphorbia gorgonis

Spring or summer, while euphorbia gorgonis 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 euphorbia gorgonis

Repot dry. Do not water euphorbia gorgonis 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 succulent 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 euphorbia gorgonis 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 euphorbia gorgonis 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 euphorbia gorgonis

Euphorbia gorgonis wants gritty, fast-draining succulent mix. Cactus compost blended roughly half-and-half with pumice, perlite or coarse grit. The caudex must not stay wet. Terracotta and a shallow pot suit its spreading, low form. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting euphorbia gorgonis — frequently asked questions

How often should you repot euphorbia gorgonis?

Every 2–3 years, into bone-dry mix for euphorbia gorgonis. Repot euphorbia gorgonis every 2–3 years into a snug pot of gritty, fast-draining succulent 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 euphorbia gorgonis need?

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

Should you water euphorbia gorgonis after repotting?

No — not straight away. Repot euphorbia gorgonis 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 euphorbia gorgonis after repotting?

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