Repotting guide

When & how to repot Utricularia livida (Utricularia livida)

Also called Livid Bladderwort, South African Bladderwort.

More about utricularia livida

About Utricularia livida

Utricularia livida · also called Livid Bladderwort, South African Bladderwort · houseplant

Utricularia livida is an easy, free-flowering terrestrial bladderwort from Africa and Mexico that carpets its pot with tiny grassy leaves and lifts dainty pale-lilac, white-throated flowers almost year-round. The carnivorous traps are microscopic bladders hidden in the soil that suck in soil organisms. Nearly weed-like in cultivation, it is one of the best beginner Utricularia.

Mature size: Leaf mat just 1-3 cm tall, spreading to fill the pot; flower scapes 10-20 cm tall.

Watch for — Drying out: Letting the medium dry, even briefly, kills the bladder traps and stresses the mat. Keep the pot permanently standing in pure water.

How to tell utricularia livida needs repotting

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

Roots poking out of the drainage holes or coiling visibly around the inside of the pot.
You are watering far more often than you used to because the rootball dries out within a day or two.
Water runs straight through and out the bottom without soaking in.
Top growth has slowed or new utricularia livida leaves are noticeably smaller than older ones despite good light.

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 utricularia livida

Every 12–18 months — sooner if roots show fast. Utricularia livida's growth habit — mat-forming terrestrial carnivore: a dense carpet of tiny spatula-shaped leaves over a network of stolons and microscopic underground bladder traps; produces near-continuous thin scapes of small lilac-and-white flowers. — sets the pace. Utricularia livida is an easy, free-flowering terrestrial bladderwort from Africa and Mexico that carpets its pot with tiny grassy leaves and lifts dainty pale-lilac, white-throated flowers almost year-round. The carnivorous traps are microscopic bladders hidden in the soil that suck in soil organisms. Nearly weed-like in cultivation, it is one of the best beginner Utricularia.

What size pot to step utricularia livida up to

Step up one pot size — about 2–3 cm (an inch) wider. Utricularia livida grows fast, so it will fill that space within a season, but jumping several sizes at once still backfires: the unused soil stays soggy and rots even a vigorous root system. One size at a time, every year or so, is the rhythm.

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 utricularia livida

Early spring, just as new growth restarts, is the ideal window for utricularia livida. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting utricularia livida

Time it for spring. Repot utricularia livida in early spring as growth restarts so it re-roots quickly into the fresh soil.
Choose one size up. Pick a pot about 2–3 cm wider with drainage holes. One step only — a much bigger pot stays soggy and rots roots.
Ease the plant out. Water lightly the day before, then tip utricularia livida out and gently loosen any roots circling the bottom of the rootball.
Repot at the same depth. Put a layer of fresh wet peat-based carnivorous mix in the new pot, set the plant so its soil line is unchanged, and backfill, firming lightly.
Water and pause feeding. Water once to settle the soil. Hold off fertiliser for about a month — fresh mix already has nutrients and feeding now burns new roots.

Aftercare

Water utricularia livida once to settle the soil, then let the surface dry before watering again — fresh mix around the roots stays wetter than the old compacted ball, so the commonest post-repot mistake is overwatering. Keep it out of direct sun for a week or two while roots re-establish. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for utricularia livida

Utricularia livida wants wet peat-based carnivorous mix. A standard bog mix of 1:1 or 2:1 peat (or coir) to sand or perlite, kept permanently wet. Utricularia thrive in nutrient-poor, acidic, constantly moist media; never use enriched potting 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 utricularia livida — frequently asked questions

How often should you repot utricularia livida?

Every 12–18 months — sooner if roots show fast for utricularia livida. Repot utricularia livida roughly every 12–18 months, in early spring as growth restarts. It grows fast and circles its pot quickly, so step up one size (about 2–3 cm wider) into fresh wet peat-based carnivorous mix. Don't jump several sizes — that soggy excess soil is what rots vigorous roots.

What size pot does utricularia livida need?

When is the best time of year to repot utricularia livida?

Can you put utricularia livida straight into a much bigger pot?

No. Even a fast-growing utricularia livida should only go up one pot size at a time. A vastly oversized pot holds a reservoir of wet soil the roots cannot reach, which stays cold and soggy and rots the roots — the opposite of what you wanted.

Should you fertilise utricularia livida after repotting?

Not immediately. Wait about 4 weeks after repotting utricularia livida. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.