Fertilising guide
How to fertilise Faucaria lupina (Faucaria lupina)— schedule & NPK
Also called wolf jaws.
More about faucaria lupina
About Faucaria lupina
Faucaria lupina · also called wolf jaws · houseplant
Faucaria lupina, or wolf jaws, is a South African mesemb whose triangular leaf pairs edge themselves with soft, tooth-like marginal hairs that resemble open jaws. It produces large golden-yellow autumn flowers and grows actively in the cooler months. Tolerant and beginner-friendly, it asks for full sun, gritty soil and careful, sparing watering.
Growth habit: Low, clump-forming rosette succulent; opposing pairs of toothed triangular leaves stack and offset into small clusters over time.
What fertiliser faucaria lupina actually wants — and why
Faucaria lupina is a light-feeding succulent — a gentle, low-nitrogen feed a few times in growth keeps it plump without forcing the weak, stretched growth over-feeding causes.
A cactus and succulent formula or a diluted balanced feed with modest, even numbers. Avoid high-nitrogen plant foods — they make a succulent etiolate and grow soft, fracture-prone tissue.
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 faucaria lupina: 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 faucaria lupina, 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 faucaria lupina:
Feed once or twice during active spring and autumn growth with a dilute, low-nitrogen cactus fertiliser at half strength. Avoid feeding during summer heat dormancy and winter rest. Keep that to sparingly through the growing season between spring through early autumn (roughly March to September) and stop entirely once growth slows for winter.
The dormant-season rule matters more than the exact interval: skip feeding entirely when faucaria lupina 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 faucaria lupina
Quarter to half strength at most for faucaria lupina. Succulents take up very little, and a strong dose burns the fine roots before the plant can use it.
Feeding always goes onto already-damp soil, never dry roots — water faucaria lupina first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the faucaria lupina watering schedule.
Signs you are over-feeding faucaria lupina
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for faucaria lupina:
- Stretched, leggy, pale growth with widely spaced leaves.
- A white salt crust on the soil or around the pot rim.
- Brown, crisped leaf tips and edges.
- Soft, mushy tissue at the base — over-feeding plus damp soil rots it.
Signs you are under-feeding faucaria lupina
- Uncommon — succulents tolerate lean conditions well.
- Very slow growth and dull, faded colour over a long period.
- Older leaves shed faster than new ones replace them in a tired old mix.
If the symptoms point at watering, light or roots rather than nutrition, the full faucaria lupina care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Feed lightly enough and you rarely need to flush, but once a year run plain water through the pot of faucaria lupina until it drains clear, and refresh the gritty mix every 2-3 years.
Organic vs synthetic feeds for faucaria lupina
Organic options
A heavily diluted seaweed or worm-casting feed once or twice in summer. UK: a drop of Westland seaweed feed; US: quarter-strength Espoma Cactus! or Dr. Earth liquid. Fresh free-draining mix matters more than any feed.
Synthetic / liquid feeds
A dedicated cactus/succulent liquid at quarter to half strength — UK: Baby Bio Cacti & Succulent Drip Feeders or Westland; US: Miracle-Gro Succulent Plant Food or Schultz Cactus Plus.
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 faucaria lupina — frequently asked questions
What fertiliser does faucaria lupina need?
A cactus and succulent formula or a diluted balanced feed with modest, even numbers. Avoid high-nitrogen plant foods — they make a succulent etiolate and grow soft, fracture-prone tissue. Faucaria lupina is a light-feeding succulent — a gentle, low-nitrogen feed a few times in growth keeps it plump without forcing the weak, stretched growth over-feeding causes.
How often should I feed faucaria lupina?
Feed once or twice during active spring and autumn growth with a dilute, low-nitrogen cactus fertiliser at half strength. Avoid feeding during summer heat dormancy and winter rest. Feed once or twice during active spring and autumn growth with a dilute, low-nitrogen cactus fertiliser at half strength. Avoid feeding during summer heat dormancy and winter rest. Keep that to sparingly through the growing season between spring through early autumn (roughly March to September) and stop entirely once growth slows for winter.
What strength of feed for faucaria lupina?
Quarter to half strength at most for faucaria lupina. Succulents take up very little, and a strong dose burns the fine roots before the plant can use it.
What does over-feeding faucaria lupina look like?
Stretched, leggy, pale growth with widely spaced leaves. A white salt crust on the soil or around the pot rim. Brown, crisped leaf tips and edges. Soft, mushy tissue at the base — over-feeding plus damp soil rots it. Feeding faucaria lupina like a leafy houseplant is the classic error — it produces a flush of pale, stretched, floppy growth that never firms up and is prone to rot at the base.
Should I flush the soil of faucaria lupina?
Feed lightly enough and you rarely need to flush, but once a year run plain water through the pot of faucaria lupina until it drains clear, and refresh the gritty mix every 2-3 years.
Keep reading
- Faucaria lupina care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water faucaria lupina — 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 snake plant
- How to fertilise dracaena
- How to fertilise peperomia
- All 5561 fertilising guides in the Growli library