Fertilising guide
How to fertilise Faucaria Bosscheana (Faucaria bosscheana)— schedule & NPK
Also called white tiger jaws, Bossche's tiger jaws.
More about faucaria bosscheana
About Faucaria Bosscheana
Faucaria bosscheana · also called white tiger jaws, Bossche's tiger jaws · houseplant
Faucaria bosscheana is a small South African mesemb that forms tight clumps of triangular leaves edged with soft, tooth-like projections resembling open jaws. The white-margined teeth give it the name white tiger jaws. A compact, slow-growing succulent, it produces large yellow daisy-like flowers in autumn and needs sharp drainage and a cool, dry winter.
Growth habit: Low, clump-forming stemless succulent. Each rosette is a stack of paired triangular leaves with white tooth-like marginal hairs; the plant offsets to form a tight cluster over time.
What fertiliser faucaria bosscheana actually wants — and why
Faucaria Bosscheana 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 faucaria bosscheana: 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 bosscheana, 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 bosscheana:
Feed lightly at most once or twice during the growing season with a dilute low-nitrogen succulent fertiliser. These slow mesembs need very little feeding; excess nitrogen causes soft, split-prone leaves and bloated growth. Treat that as sparingly through the growing season 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 faucaria bosscheana 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 bosscheana
Half strength is the safe default for faucaria bosscheana — 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 faucaria bosscheana first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the faucaria bosscheana watering schedule.
Signs you are over-feeding faucaria bosscheana
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for faucaria bosscheana:
- 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 faucaria bosscheana
- 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 faucaria bosscheana care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of faucaria bosscheana 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 faucaria bosscheana
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 faucaria bosscheana — frequently asked questions
What fertiliser does faucaria bosscheana 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. Faucaria Bosscheana 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 faucaria bosscheana?
Feed lightly at most once or twice during the growing season with a dilute low-nitrogen succulent fertiliser. These slow mesembs need very little feeding; excess nitrogen causes soft, split-prone leaves and bloated growth. Feed lightly at most once or twice during the growing season with a dilute low-nitrogen succulent fertiliser. These slow mesembs need very little feeding; excess nitrogen causes soft, split-prone leaves and bloated growth. Treat that as sparingly through the growing season 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 faucaria bosscheana?
Half strength is the safe default for faucaria bosscheana — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding faucaria bosscheana 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 faucaria bosscheana 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 faucaria bosscheana?
Flush the pot of faucaria bosscheana 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
- Faucaria Bosscheana care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water faucaria bosscheana — 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 3899 fertilising guides in the Growli library