Fertilising guide
How to fertilise Dionaea muscipula 'Red Dragon' (Dionaea muscipula 'Red Dragon')— schedule & NPK
Also called Red Dragon Venus Flytrap, Akai Ryu Flytrap.
More about dionaea muscipula 'red dragon'
About Dionaea muscipula 'Red Dragon'
Dionaea muscipula 'Red Dragon' · also called Red Dragon Venus Flytrap, Akai Ryu Flytrap · houseplant
Dionaea 'Red Dragon' (Akai Ryu) is a famous Venus flytrap cultivar prized for turning deep maroon-red throughout the whole plant in strong light. Its hinged traps snap shut on insects, then digest them. Like all flytraps it needs a sunny spot, pure water, lean acidic soil and a cold winter dormancy to thrive for years.
Growth habit: Low rosette of hinged snap-traps on leaf petioles; in winter it dies back to a resting rhizome (dormancy) and re-sprouts in spring, gradually clumping by division.
What fertiliser dionaea muscipula 'red dragon' actually wants — and why
Dionaea muscipula 'Red Dragon' is an acid-loving plant — it can only take up nutrients in acidic soil, so the feed itself matters less than using an ericaceous formula and never liming.
An ericaceous (acidic) fertiliser, formulated to keep the soil pH low and supply iron and trace elements in a form acid-loving roots can absorb. Ordinary feeds and any lime lock out iron and yellow the leaves.
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 dionaea muscipula 'red dragon': 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 dionaea muscipula 'red dragon', 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 dionaea muscipula 'red dragon':
Never fertilise the roots. It feeds by catching insects; if grown bug-free indoors, drop a small live or rehydrated insect into an active trap every few weeks during the growing season. Do not feed during dormancy. In practice: an ericaceous feed in spring as growth resumes, repeated through the main growing months; never apply lime, bonemeal or wood ash, which raise pH.
The dormant-season rule matters more than the exact interval: skip feeding entirely when dionaea muscipula 'red dragon' 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 dionaea muscipula 'red dragon'
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for dionaea muscipula 'red dragon'. The variable that actually matters is pH, not concentration.
Feeding always goes onto already-damp soil, never dry roots — water dionaea muscipula 'red dragon' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the dionaea muscipula 'red dragon' watering schedule.
Signs you are over-feeding dionaea muscipula 'red dragon'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for dionaea muscipula 'red dragon':
- Brown, scorched leaf margins from too strong or too frequent a dose.
- White salt crust on the soil surface.
- Soft, lush growth that fruits or flowers poorly.
Signs you are under-feeding dionaea muscipula 'red dragon'
- Yellowing leaves with green veins (iron chlorosis from high pH).
- Weak growth, poor cropping and an overall pale, stressed look.
- Stunted new shoots in spring despite adequate water and light.
If the symptoms point at watering, light or roots rather than nutrition, the full dionaea muscipula 'red dragon' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush dionaea muscipula 'red dragon' with rainwater (not hard tap water, which raises pH) if salts build up; better still, mulch with pine needles or composted bark and water with rainwater to hold the acidity.
Organic vs synthetic feeds for dionaea muscipula 'red dragon'
Organic options
Composted pine bark, pine-needle mulch, used coffee grounds and an organic ericaceous feed gently maintain acidity. UK: Vitax or Westland Ericaceous; US: Espoma Holly-tone or Dr. Earth Acid Lovers. Slow, soil-improving, hard to overdo.
Synthetic / liquid feeds
A liquid or granular ericaceous feed — UK: Miracle-Gro Ericaceous, Vitax or Westland; US: Miracle-Gro Acid-Loving Plant Food or Espoma Holly-tone. Pair with rainwater and an acidic mulch for it to work.
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 dionaea muscipula 'red dragon' — frequently asked questions
What fertiliser does dionaea muscipula 'red dragon' need?
An ericaceous (acidic) fertiliser, formulated to keep the soil pH low and supply iron and trace elements in a form acid-loving roots can absorb. Ordinary feeds and any lime lock out iron and yellow the leaves. Dionaea muscipula 'Red Dragon' is an acid-loving plant — it can only take up nutrients in acidic soil, so the feed itself matters less than using an ericaceous formula and never liming.
How often should I feed dionaea muscipula 'red dragon'?
Never fertilise the roots. It feeds by catching insects; if grown bug-free indoors, drop a small live or rehydrated insect into an active trap every few weeks during the growing season. Do not feed during dormancy. Never fertilise the roots. It feeds by catching insects; if grown bug-free indoors, drop a small live or rehydrated insect into an active trap every few weeks during the growing season. Do not feed during dormancy. In practice: an ericaceous feed in spring as growth resumes, repeated through the main growing months; never apply lime, bonemeal or wood ash, which raise pH.
What strength of feed for dionaea muscipula 'red dragon'?
Follow the ericaceous product's own rate — these are formulated for the plant, so the dilution on the label is right for dionaea muscipula 'red dragon'. The variable that actually matters is pH, not concentration.
What does over-feeding dionaea muscipula 'red dragon' look like?
Brown, scorched leaf margins from too strong or too frequent a dose. White salt crust on the soil surface. Soft, lush growth that fruits or flowers poorly. Feeding dionaea muscipula 'red dragon' an ordinary fertiliser, or growing it in hard tap water / limey soil, is the defining mistake — it triggers lime-induced chlorosis (yellow leaves, green veins) no amount of feeding fixes until the pH comes down.
Should I flush the soil of dionaea muscipula 'red dragon'?
Flush dionaea muscipula 'red dragon' with rainwater (not hard tap water, which raises pH) if salts build up; better still, mulch with pine needles or composted bark and water with rainwater to hold the acidity.
Keep reading
- Dionaea muscipula 'Red Dragon' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water dionaea muscipula 'red dragon' — 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