Fertilising guide
How to fertilise Kenneally's Sundew (Drosera kenneallyi)— schedule & NPK
Also called Kenneally's sundew.
More about kenneally's sundew
About Kenneally's Sundew
Drosera kenneallyi · also called Kenneally's sundew · tropical
Drosera kenneallyi is a rare member of the petiolaris complex, described from limited locations in the Kimberley region of Western Australia, where it grows on seasonally inundated sandy or gravelly substrates at low altitude. It shares the characteristic monsoon-dependent lifecycle of its petiolaris relatives — growing vigorously in the warm wet season and retreating to a subterranean rhizome in the dry season. The single most important care fact is that this species is among the most heat-demanding of the complex; sustained temperatures below 20 °C at any time of year are detrimental. Drosera is not listed as toxic to cats or dogs by the ASPCA and is considered non-toxic to pets.
Growth habit: Deciduous rosette-forming perennial; erect to semi-erect petiolate leaves with glandular laminae, dying back to the rhizome during the dry season.
What fertiliser kenneally's sundew actually wants — and why
Kenneally's Sundew 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 kenneally's sundew: 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 kenneally's sundew, 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 kenneally's sundew:
Provide small insects (gnats, fruit flies, mealworms) to active leaves 2–4 times during the growing season; do not fertilise the growing medium at any time. 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 kenneally's sundew 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 kenneally's sundew
Half strength is the safe default for kenneally's sundew — 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 kenneally's sundew first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the kenneally's sundew watering schedule.
Signs you are over-feeding kenneally's sundew
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for kenneally's sundew:
- 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 kenneally's sundew
- 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 kenneally's sundew care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of kenneally's sundew 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 kenneally's sundew
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 kenneally's sundew — frequently asked questions
What fertiliser does kenneally's sundew 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. Kenneally's Sundew 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 kenneally's sundew?
Provide small insects (gnats, fruit flies, mealworms) to active leaves 2–4 times during the growing season; do not fertilise the growing medium at any time. Provide small insects (gnats, fruit flies, mealworms) to active leaves 2–4 times during the growing season; do not fertilise the growing medium at any time. 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 kenneally's sundew?
Half strength is the safe default for kenneally's sundew — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding kenneally's sundew 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 kenneally's sundew 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 kenneally's sundew?
Flush the pot of kenneally's sundew 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
- Kenneally's Sundew care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water kenneally's sundew — 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 ground bromeliad
- How to fertilise serra bromeliad
- How to fertilise crimson portea
- All 10153 fertilising guides in the Growli library