Repotting guide

When & how to repot Euphorbia francoisii (Euphorbia francoisii)

Also called François's euphorbia, Madagascar patterned leaf euphorbia.

More about euphorbia francoisii

About Euphorbia francoisii

Euphorbia francoisii · also called François's euphorbia, Madagascar patterned leaf euphorbia · houseplant

Euphorbia francoisii is a small, highly collectible Madagascan succulent grown for its remarkable leaves, which can be patterned, marbled or flushed pink, red, cream and green in countless selected forms. It is a slow, compact dwarf with a thickened caudex-like base, needing bright light, gritty soil and careful, restrained watering.

Mature size: Small and slow, typically around 8-15cm tall with a similar spread, occasionally clustering into a low colony over years.

Watch for — Irritant latex: Damaged tissue weeps caustic sap. Wear gloves when handling, dividing or repotting and avoid eye contact.

How to tell euphorbia francoisii needs repotting

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

Every 2–3 years, into bone-dry mix. Euphorbia francoisii's growth habit — compact dwarf succulent with a short, thickened, partly subterranean stem from which arise rosettes of broad, often vividly patterned and colourful leaves; highly variable across named cultivars and hybrids. — sets the pace. Euphorbia francoisii is a small, highly collectible Madagascan succulent grown for its remarkable leaves, which can be patterned, marbled or flushed pink, red, cream and green in countless selected forms. It is a slow, compact dwarf with a thickened caudex-like base, needing bright light, gritty soil and careful, restrained watering.

What size pot to step euphorbia francoisii up to

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

Spring or summer, while euphorbia francoisii 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 francoisii

Repot dry. Do not water euphorbia francoisii 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 free-draining, gritty 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 francoisii 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 francoisii 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 francoisii

Euphorbia francoisii wants free-draining, gritty succulent mix. A gritty cactus mix rich in pumice, perlite or coarse sand with modest organic content. Sharp drainage protects the swollen base from rot; a shallow pot helps the soil dry quickly between waterings. 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 francoisii — frequently asked questions

How often should you repot euphorbia francoisii?

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

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

Should you water euphorbia francoisii after repotting?

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

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