Repotting guide

When & how to repot Pinguicula agnata (Pinguicula agnata)

Also called Agnata Butterwort, Mexican Butterwort.

More about pinguicula agnata

About Pinguicula agnata

Pinguicula agnata · also called Agnata Butterwort, Mexican Butterwort · houseplant

Pinguicula agnata is a Mexican butterwort that catches gnats and fungus flies on the sticky mucilage coating its flat, succulent green rosette. Forgiving and beginner-friendly, it tolerates harder water than most carnivores and seasonally shifts to small, tight winter leaves. It rewards bright light and a lean, mineral mix with pale violet-tinged flowers.

Mature size: Rosette 8-15 cm across; flower scapes to 15-20 cm tall.

Watch for — Rosette rot from overwatering in dormancy: The succulent winter leaves rot if kept soggy. Reduce watering and stop tray-standing once the rosette tightens into its compact non-carnivorous phase.

How to tell pinguicula agnata needs repotting

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

Every 2–3 years, into bone-dry mix. Pinguicula agnata's growth habit — stemless, ground-hugging rosette of flat, slightly upturned succulent leaves coated in mucilage glands; produces a clear summer rosette and tighter, non-carnivorous succulent leaves in its winter rest, sending up tall slender flower scapes. — sets the pace. Pinguicula agnata is a Mexican butterwort that catches gnats and fungus flies on the sticky mucilage coating its flat, succulent green rosette. Forgiving and beginner-friendly, it tolerates harder water than most carnivores and seasonally shifts to small, tight winter leaves. It rewards bright light and a lean, mineral mix with pale violet-tinged flowers.

What size pot to step pinguicula agnata up to

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

Spring or summer, while pinguicula agnata 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 pinguicula agnata

Repot dry. Do not water pinguicula agnata 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 lean mineral carnivorous 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 pinguicula agnata 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 pinguicula agnata 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 pinguicula agnata

Pinguicula agnata wants lean mineral carnivorous mix. A fast-draining 1:1:1 of peat or coir, perlite and sand, or a more mineral blend of pumice, lava grit and a little peat. Mexican Pinguicula prefer airier, less acidic media than bog butterworts; avoid all fertiliser-laden 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 pinguicula agnata — frequently asked questions

How often should you repot pinguicula agnata?

Every 2–3 years, into bone-dry mix for pinguicula agnata. Repot pinguicula agnata every 2–3 years into a snug pot of lean mineral carnivorous 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 pinguicula agnata need?

When is the best time of year to repot pinguicula agnata?

Should you water pinguicula agnata after repotting?

No — not straight away. Repot pinguicula agnata 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 pinguicula agnata after repotting?

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