Repotting guide

When & how to repot Candle plant (Senecio articulatus (syn. Curio articulatus))

Also called hot dog cactus, candlestick plant, sausage plant.

More about candle plant

About Candle plant

Senecio articulatus (syn. Curio articulatus) · also called hot dog cactus, candlestick plant · houseplant

Candle plant is a South African succulent grown for its jointed, sausage-like blue-grey stems. It is a winter grower that wants strong light and very sparse watering, going dormant in summer heat. Keep it well out of reach: its genus, Senecio, is flagged toxic to pets by the ASPCA.

Mature size: Around 30-60 cm (12-24 in) tall, slowly forming a clump of jointed stems

Watch for — Mushy, collapsing stems: Overwatering or root rot — let the mix dry out fully and cut back on water, especially in summer.

How to tell candle plant needs repotting

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

Every 2–3 years, into bone-dry mix. Candle plant's growth habit — upright, clumping succulent with segmented stems — sets the pace. Candle plant is a South African succulent grown for its jointed, sausage-like blue-grey stems. It is a winter grower that wants strong light and very sparse watering, going dormant in summer heat. Keep it well out of reach: its genus, Senecio, is flagged toxic to pets by the ASPCA.

What size pot to step candle plant up to

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

Spring or summer, while candle plant 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 candle plant

Repot dry. Do not water candle plant 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, free-draining cactus or 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 candle plant 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 candle plant 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 candle plant

Candle plant wants gritty, free-draining cactus or succulent mix. Use a sharp-draining mix, such as cactus compost cut with extra perlite, pumice or coarse sand (about 1:1). Always plant in a pot with drainage holes; standing water rots the fleshy stems within days. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting candle plant — frequently asked questions

How often should you repot candle plant?

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

When is the best time of year to repot candle plant?

Should you water candle plant after repotting?

No — not straight away. Repot candle plant 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 candle plant after repotting?

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