Repotting guide

When & how to repot Paraboea rufescens (Paraboea rufescens)

Also called russet paraboea, Southeast Asian gesneriad.

More about paraboea rufescens

About Paraboea rufescens

Paraboea rufescens · also called russet paraboea, Southeast Asian gesneriad · flowering

Paraboea rufescens is a limestone-dwelling gesneriad of Southeast Asia and southern China, grown for rosettes of thick, crinkled leaves clothed in rusty woolly hairs beneath, topped by airy clusters of small pale-purple to white flowers. A specialist of shaded karst cliffs, it wants gritty, sharply drained, alkaline conditions, bright shade, and warm, humid air.

Mature size: Rosette 15-30 cm across; flower stalks rise 15-30 cm above the foliage.

Watch for — Crown and root rot: Water in the woolly crown or soggy soil rots this cliff plant fast. Use a very gritty, alkaline mix, water at the soil edge, and let the surface dry between drinks.

How to tell paraboea rufescens needs repotting

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

Every 2–3 years, into bone-dry mix. Paraboea rufescens's growth habit — rosette-forming perennial, sometimes with a short woody base, holding thick crinkled leaves felted with rusty hairs beneath. sends up branched stalks of small flowers above the rosette; stays compact and clump-like on its rocky perch. — sets the pace. Paraboea rufescens is a limestone-dwelling gesneriad of Southeast Asia and southern China, grown for rosettes of thick, crinkled leaves clothed in rusty woolly hairs beneath, topped by airy clusters of small pale-purple to white flowers. A specialist of shaded karst cliffs, it wants gritty, sharply drained, alkaline conditions, bright shade, and warm, humid air.

What size pot to step paraboea rufescens up to

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

Spring or summer, while paraboea rufescens 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 paraboea rufescens

Repot dry. Do not water paraboea rufescens 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, sharply drained, alkaline (limestone) 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 paraboea rufescens 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 paraboea rufescens 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 paraboea rufescens

Paraboea rufescens wants gritty, sharply drained, alkaline (limestone) mix. Replicate its karst home with a free-draining blend of grit, perlite, and a little humus, plus crushed limestone or tufa to raise pH. Excellent drainage is critical, as the fleshy roots of this cliff-dweller cannot tolerate stagnant, acidic, wet soil. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting paraboea rufescens — frequently asked questions

How often should you repot paraboea rufescens?

Every 2–3 years, into bone-dry mix for paraboea rufescens. Repot paraboea rufescens every 2–3 years into a snug pot of gritty, sharply drained, alkaline (limestone) 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 paraboea rufescens need?

When is the best time of year to repot paraboea rufescens?

Should you water paraboea rufescens after repotting?

No — not straight away. Repot paraboea rufescens 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 paraboea rufescens after repotting?

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