Fertilising guide
How to fertilise Single-Flowered Bladderwort (Utricularia uniflora)— schedule & NPK
Also called Single-flowered bladderwort, Single bladderwort.
More about single-flowered bladderwort
About Single-Flowered Bladderwort
Utricularia uniflora · also called Single-flowered bladderwort, Single bladderwort · flowering
Utricularia uniflora is a small terrestrial bladderwort native to the east coast of Australia, particularly New South Wales and Tasmania, where it grows in bogs, seeping rock faces, and mossy stream-bank margins at low to moderate altitudes. Its name reflects the characteristic of typically bearing only one flower per scape — a mauve to lilac bloom with distinctive yellow and white ridges on the lower lip. It is a seasonally active species, blooming in spring and summer, and is best grown in cool, permanently moist, nutrient-poor conditions. Utricularia is not listed in the ASPCA database; classified as mildly-toxic as a precaution.
Growth habit: Small terrestrial perennial with short, thread-like stolons bearing tiny oval to linear leaves and subterranean bladder traps.
What fertiliser single-flowered bladderwort actually wants — and why
Single-Flowered Bladderwort 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 single-flowered bladderwort: 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 single-flowered bladderwort, 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 single-flowered bladderwort:
No fertiliser needed or appropriate; bladder traps capture soil microorganisms. In a very sterile substrate, one very dilute foliar misting with urea-free fertiliser (1/10 strength) in spring is sufficient for the season. 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 single-flowered bladderwort 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 single-flowered bladderwort
Half strength is the safe default for single-flowered bladderwort — 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 single-flowered bladderwort first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the single-flowered bladderwort watering schedule.
Signs you are over-feeding single-flowered bladderwort
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for single-flowered bladderwort:
- 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 single-flowered bladderwort
- 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 single-flowered bladderwort care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of single-flowered bladderwort 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 single-flowered bladderwort
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 single-flowered bladderwort — frequently asked questions
What fertiliser does single-flowered bladderwort 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. Single-Flowered Bladderwort 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 single-flowered bladderwort?
No fertiliser needed or appropriate; bladder traps capture soil microorganisms. In a very sterile substrate, one very dilute foliar misting with urea-free fertiliser (1/10 strength) in spring is sufficient for the season. No fertiliser needed or appropriate; bladder traps capture soil microorganisms. In a very sterile substrate, one very dilute foliar misting with urea-free fertiliser (1/10 strength) in spring is sufficient for the season. 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 single-flowered bladderwort?
Half strength is the safe default for single-flowered bladderwort — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding single-flowered bladderwort 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 single-flowered bladderwort 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 single-flowered bladderwort?
Flush the pot of single-flowered bladderwort 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
- Single-Flowered Bladderwort care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water single-flowered bladderwort — 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 noble fir
- How to fertilise korean fir
- How to fertilise subalpine fir
- All 10153 fertilising guides in the Growli library