Fertilising guide
How to fertilise Gypsum Butterwort (Pinguicula gypsicola)— schedule & NPK
Also called Gypsum butterwort, Mexican butterwort.
More about gypsum butterwort
About Gypsum Butterwort
Pinguicula gypsicola · also called Gypsum butterwort, Mexican butterwort · houseplant
Pinguicula gypsicola is a lithophytic carnivorous plant endemic to the state of San Luis Potosí, Mexico, where it colonises gypsum rock outcrops and cliffs in semi-arid scrub alongside cacti, agaves, and Hechtia. It is a heterophyllous species, producing upright, strap-like sticky carnivorous leaves in summer and a tight succulent rosette of non-carnivorous leaves in winter — the most important care fact is that winter watering must be nearly eliminated or the plant will rot. It is not confirmed on the ASPCA non-toxic plant list and carries a precautionary mildly-toxic rating.
Growth habit: Stemless rosette with upright, linear carnivorous leaves in summer (up to 6.5 cm long) transitioning to a compact, tight succulent rosette in winter.
Watch for — Mineral build-up: Gypsum soils are mineral-specific; do not add lime or dolomite, and always use distilled or rain water. Tap water deposits can accumulate quickly, causing leaf tip burn and root damage.
What fertiliser gypsum butterwort actually wants — and why
Gypsum Butterwort is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula.
For the language behind the three numbers on the bottle — what nitrogen, phosphorus and potassium each do — see the NPK ratio explained entry. The short version for gypsum butterwort: match the feed to the job the plant is doing right now, not to a generic “plant food” on the shelf.
How often to feed gypsum butterwort, and which months
Feeding only earns its keep while the plant is in active growth and can use the nutrients — pour feed into a dormant or low-light plant and it simply builds up as root-burning salt. For gypsum butterwort:
Carnivorous plants capture their own nutrients; if kept in a clean indoor environment, supplement by placing small fruit flies or diluted quarter-strength orchid fertiliser (foliar) on the sticky leaves every 2-3 weeks during the carnivorous season only. Treat that as every 2-3 weeks between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when gypsum butterwort is resting. For the wider context on indoor feeding rhythms across the seasons, the houseplant fertiliser schedule walks through the year month by month.
What strength to mix for gypsum butterwort
Half strength is the safe default for gypsum butterwort — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
Feeding always goes onto already-damp soil, never dry roots — water gypsum butterwort first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the gypsum butterwort watering schedule.
Signs you are over-feeding gypsum butterwort
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for gypsum butterwort:
- Brown, crispy leaf tips and edges with no sign of underwatering.
- A white, crusty salt deposit on the soil surface or pot rim.
- Weak, pale, stretched new growth that flops.
- Lower leaves yellow and drop while the soil is correctly watered.
Signs you are under-feeding gypsum butterwort
- Uniformly pale or yellow-green leaves, oldest first.
- Noticeably small new leaves and stalled growth in good light and season.
- A generally tired, lacklustre look despite correct watering and light.
If the symptoms point at watering, light or roots rather than nutrition, the full gypsum butterwort care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of gypsum butterwort with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Organic vs synthetic feeds for gypsum butterwort
Organic options
A diluted seaweed or worm-casting feed, or fish emulsion if you can tolerate the smell indoors. UK: Westland or Baby Bio Organic, dilute seaweed; US: Espoma Indoor! or Neptune's Harvest fish & seaweed. Slow, gentle and hard to overdo.
Synthetic / liquid feeds
A general-purpose houseplant liquid at half strength — UK: Baby Bio, Westland Houseplant Feed or Phostrogen; US: Miracle-Gro Indoor Plant Food or Schultz. Convenient and fast-acting; the only risk is overdoing it.
Brand names are examples, not endorsements, and UK and US ranges differ — check the label’s own NPK and dilution rate, since formulations change.
Fertilising gypsum butterwort — frequently asked questions
What fertiliser does gypsum butterwort need?
A balanced general houseplant feed (roughly even N-P-K) is exactly right — it is grown for foliage, so steady, moderate nitrogen for healthy leaves is the goal, not a bloom or root formula. Gypsum Butterwort is an easy, light foliage feeder — a half-strength balanced liquid feed through the growing months keeps it green without forcing weak, sappy growth.
How often should I feed gypsum butterwort?
Carnivorous plants capture their own nutrients; if kept in a clean indoor environment, supplement by placing small fruit flies or diluted quarter-strength orchid fertiliser (foliar) on the sticky leaves every 2-3 weeks during the carnivorous season only. Carnivorous plants capture their own nutrients; if kept in a clean indoor environment, supplement by placing small fruit flies or diluted quarter-strength orchid fertiliser (foliar) on the sticky leaves every 2-3 weeks during the carnivorous season only. Treat that as every 2-3 weeks between spring through early autumn (roughly March to September); ease off in autumn and stop entirely in the low light of winter.
What strength of feed for gypsum butterwort?
Half strength is the safe default for gypsum butterwort — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding gypsum butterwort look like?
Brown, crispy leaf tips and edges with no sign of underwatering. A white, crusty salt deposit on the soil surface or pot rim. Weak, pale, stretched new growth that flops. Lower leaves yellow and drop while the soil is correctly watered. Feeding gypsum butterwort year-round on a fixed schedule, including dark winter months, is the most common mistake — it cannot use the nutrients in low light and the surplus simply burns the roots and crusts the soil.
Should I flush the soil of gypsum butterwort?
Flush the pot of gypsum butterwort with plain water until it runs freely from the base every couple of months in the feeding season — it washes out the fertiliser salts that cause brown tips.
Keep reading
- Gypsum Butterwort care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water gypsum butterwort — the watering schedule
- The houseplant fertiliser schedule — feeding through the year
- NPK ratio explained — what the three numbers on the bottle mean
- How to fertilise acorus gramineus 'variegatus'
- How to fertilise aponogeton crispus
- How to fertilise marsilea quadrifolia
- All 10153 fertilising guides in the Growli library