Repotting guide

When & how to repot Ehlers' Butterwort (Pinguicula ehlersiae)

Also called Ehlers' butterwort, Ehlers' pinguicula.

More about ehlers' butterwort

About Ehlers' Butterwort

Pinguicula ehlersiae · also called Ehlers' butterwort, Ehlers' pinguicula · houseplant

Pinguicula ehlersiae is a compact Mexican butterwort producing flat rosettes of succulent, glistening yellow-green leaves coated in sticky glandular hairs that trap small insects and fungus gnats. It blooms freely with violet-purple flowers on delicate scapes and enters a succulent non-carnivorous winter rosette phase. An excellent beginner's pinguicula, it tolerates low humidity and brighter indirect light.

Mature size: Summer rosette 5-10 cm across; compact winter rosette 2-4 cm across; flower scapes to 12 cm

Watch for — Crown rot in winter: The most common failure: keeping P. ehlersiae in wet peat-based medium through the winter non-carnivorous phase causes root and crown rot. Switch to a drier mineral mix and reduce watering sharply when the succulent winter rosette forms.

How to tell ehlers' butterwort needs repotting

Repotting on a calendar is less reliable than reading the plant. For ehlers' butterwort, 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 ehlers' butterwort

Every 2–3 years, into bone-dry mix. Ehlers' Butterwort's growth habit — flat rosette-forming perennial with seasonal dimorphism — sets the pace. Pinguicula ehlersiae is a compact Mexican butterwort producing flat rosettes of succulent, glistening yellow-green leaves coated in sticky glandular hairs that trap small insects and fungus gnats. It blooms freely with violet-purple flowers on delicate scapes and enters a succulent non-carnivorous winter rosette phase. An excellent beginner's pinguicula, it tolerates low humidity and brighter indirect light.

What size pot to step ehlers' butterwort up to

Use a pot only one size up — or even the same pot with fresh gritty mix if the roots have room. Ehlers' Butterwort 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 ehlers' butterwort

Spring or summer, while ehlers' butterwort 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 ehlers' butterwort

Repot dry. Do not water ehlers' butterwort 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 mineral-based mix for mexican pinguicula 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 ehlers' butterwort 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 ehlers' butterwort 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 ehlers' butterwort

Ehlers' Butterwort wants mineral-based mix for mexican pinguicula. Unlike most carnivores, P. ehlersiae prefers a well-drained alkaline-leaning mineral mix: 2 parts perlite to 1 part vermiculite with a small amount of fine sand or dolomitic lime-sand. Avoid peat-heavy mixes which stay too wet and promote rot during winter. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting ehlers' butterwort — frequently asked questions

How often should you repot ehlers' butterwort?

Every 2–3 years, into bone-dry mix for ehlers' butterwort. Repot ehlers' butterwort every 2–3 years into a snug pot of mineral-based mix for mexican pinguicula, 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 ehlers' butterwort need?

When is the best time of year to repot ehlers' butterwort?

Should you water ehlers' butterwort after repotting?

No — not straight away. Repot ehlers' butterwort 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 ehlers' butterwort after repotting?

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