Fertilising guide
How to fertilise Shark Teeth Venus flytrap (Dionaea muscipula 'Shark Teeth')— schedule & NPK
Also called Shark Teeth Venus flytrap, Shark Teeth flytrap.
More about shark teeth venus flytrap
About Shark Teeth Venus flytrap
Dionaea muscipula 'Shark Teeth' · also called Shark Teeth Venus flytrap, Shark Teeth flytrap · houseplant
A collector cultivar whose trap lobes are lined with broad, triangular, shark-fin teeth without serrations — giving the open trap the unmistakable look of a gaping shark jaw. Grows erect in summer, prostrate during winter dormancy. Like all Venus flytraps, it demands pure water, full sun, and nutrient-poor soil. Pet-safe per ASPCA.
Growth habit: Rosette-forming perennial; upright in the growing season, semi-prostrate with reduced leaves during winter dormancy
What fertiliser shark teeth venus flytrap actually wants — and why
Shark Teeth Venus flytrap 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 shark teeth venus flytrap: 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 shark teeth venus flytrap, 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 shark teeth venus flytrap:
No soil fertiliser. Feed by allowing the plant to trap small live or freeze-dried insects — one insect per trap every 4–6 weeks during the growing season. Avoid feeding in dormancy. Never apply liquid or granular fertilisers. 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 shark teeth venus flytrap 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 shark teeth venus flytrap
Half strength is the safe default for shark teeth venus flytrap — 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 shark teeth venus flytrap first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the shark teeth venus flytrap watering schedule.
Signs you are over-feeding shark teeth venus flytrap
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for shark teeth venus flytrap:
- 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 shark teeth venus flytrap
- 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 shark teeth venus flytrap care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of shark teeth venus flytrap 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 shark teeth venus flytrap
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 shark teeth venus flytrap — frequently asked questions
What fertiliser does shark teeth venus flytrap 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. Shark Teeth Venus flytrap 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 shark teeth venus flytrap?
No soil fertiliser. Feed by allowing the plant to trap small live or freeze-dried insects — one insect per trap every 4–6 weeks during the growing season. Avoid feeding in dormancy. Never apply liquid or granular fertilisers. No soil fertiliser. Feed by allowing the plant to trap small live or freeze-dried insects — one insect per trap every 4–6 weeks during the growing season. Avoid feeding in dormancy. Never apply liquid or granular fertilisers. 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 shark teeth venus flytrap?
Half strength is the safe default for shark teeth venus flytrap — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding shark teeth venus flytrap 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 shark teeth venus flytrap 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 shark teeth venus flytrap?
Flush the pot of shark teeth venus flytrap 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
- Shark Teeth Venus flytrap care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water shark teeth venus flytrap — 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 highland pitcher plant
- How to fertilise purple pitcher plant
- How to fertilise cape sundew
- All 6887 fertilising guides in the Growli library