Fertilising guide
How to fertilise Red Arrow Arrowhead Vine (Syngonium erythrophyllum)— schedule & NPK
Also called red arrow arrowhead vine, red Syngonium, burgundy arrowhead plant.
More about red arrow arrowhead vine
About Red Arrow Arrowhead Vine
Syngonium erythrophyllum · also called red arrow arrowhead vine, red Syngonium · houseplant
Syngonium erythrophyllum is a rare Panamanian aroid prized for its velvety, deep burgundy-red to dark green arrow-shaped leaves with a contrasting copper-red underside. Relatively compact and slow-growing, it suits bright-to-medium indirect light and high humidity. All Syngonium are toxic — calcium oxalate crystals cause oral irritation in pets.
Growth habit: Compact, slow-growing vining aroid; stays tighter than many Syngonium species
Watch for — Leaves turning green (loss of red): Low light is the most common cause of red fading in this species. Move to a brighter position with indirect light. Overfeeding with high-nitrogen fertiliser also pushes green vegetative growth at the expense of anthocyanin colour.
What fertiliser red arrow arrowhead vine actually wants — and why
Red Arrow Arrowhead Vine is a genuinely hungry tropical — in bright warmth it pushes growth fast and rewards a regular half-strength balanced feed all season.
A balanced liquid feed (even N-P-K) or a slightly nitrogen-leaning foliage feed — this is a big-leaved foliage plant putting on real size, so it wants steady nitrogen for lush leaves, not a bloom 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 red arrow arrowhead vine: 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 red arrow arrowhead vine, 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 red arrow arrowhead vine:
Feed monthly during the growing season (spring–summer) with a balanced or slightly phosphorus-rich liquid fertiliser at half strength. Phosphorus and potassium support the anthocyanin pigments responsible for the red colouration. For a fast grower like this that means feeding regularly — about monthly — right through spring through early autumn (roughly March to September), tapering off only as light drops in autumn.
The dormant-season rule matters more than the exact interval: skip feeding entirely when red arrow arrowhead vine 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 red arrow arrowhead vine
Half strength every feed is the sweet spot for red arrow arrowhead vine: frequent enough to fuel fast growth, dilute enough that it never scorches even when you feed often.
Feeding always goes onto already-damp soil, never dry roots — water red arrow arrowhead vine first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the red arrow arrowhead vine watering schedule.
Signs you are over-feeding red arrow arrowhead vine
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for red arrow arrowhead vine:
- Brown, scorched leaf tips and margins despite correct watering.
- A white salt crust on the soil or around the pot edge.
- Sudden leaf yellowing and drop shortly after a strong feed.
- Soft, weak, over-stretched growth that cannot support itself.
Signs you are under-feeding red arrow arrowhead vine
- New leaves coming in noticeably smaller than older ones.
- Pale, yellow-green older leaves and slow growth through peak summer.
- A general loss of vigour and gloss in a plant that should be racing away.
If the symptoms point at watering, light or roots rather than nutrition, the full red arrow arrowhead vine care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Because you feed often, salts accumulate faster — flush the pot of red arrow arrowhead vine with plain water until it drains freely roughly every month through the feeding season to keep the root zone clean.
Organic vs synthetic feeds for red arrow arrowhead vine
Organic options
A diluted seaweed or fish-and-seaweed feed plus a yearly top-dress of worm castings supports fast growth without burn risk. UK: Westland seaweed or Baby Bio Organic; US: Neptune's Harvest or Espoma Indoor!.
Synthetic / liquid feeds
A balanced houseplant liquid at half strength applied frequently — UK: Baby Bio, Phostrogen or Westland Houseplant Feed; US: Miracle-Gro Indoor Plant Food or Dyna-Gro Foliage-Pro for steady leafy growth.
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 red arrow arrowhead vine — frequently asked questions
What fertiliser does red arrow arrowhead vine need?
A balanced liquid feed (even N-P-K) or a slightly nitrogen-leaning foliage feed — this is a big-leaved foliage plant putting on real size, so it wants steady nitrogen for lush leaves, not a bloom formula. Red Arrow Arrowhead Vine is a genuinely hungry tropical — in bright warmth it pushes growth fast and rewards a regular half-strength balanced feed all season.
How often should I feed red arrow arrowhead vine?
Feed monthly during the growing season (spring–summer) with a balanced or slightly phosphorus-rich liquid fertiliser at half strength. Phosphorus and potassium support the anthocyanin pigments responsible for the red colouration. Feed monthly during the growing season (spring–summer) with a balanced or slightly phosphorus-rich liquid fertiliser at half strength. Phosphorus and potassium support the anthocyanin pigments responsible for the red colouration. For a fast grower like this that means feeding regularly — about monthly — right through spring through early autumn (roughly March to September), tapering off only as light drops in autumn.
What strength of feed for red arrow arrowhead vine?
Half strength every feed is the sweet spot for red arrow arrowhead vine: frequent enough to fuel fast growth, dilute enough that it never scorches even when you feed often.
What does over-feeding red arrow arrowhead vine look like?
Brown, scorched leaf tips and margins despite correct watering. A white salt crust on the soil or around the pot edge. Sudden leaf yellowing and drop shortly after a strong feed. Soft, weak, over-stretched growth that cannot support itself. The mistake here is the opposite of most houseplants: under-feeding a fast tropical in peak season starves it, leaving small, pale new leaves and slow growth — but full-strength doses still burn it, so feed often and weak, not occasionally and strong.
Should I flush the soil of red arrow arrowhead vine?
Because you feed often, salts accumulate faster — flush the pot of red arrow arrowhead vine with plain water until it drains freely roughly every month through the feeding season to keep the root zone clean.
Keep reading
- Red Arrow Arrowhead Vine care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water red arrow arrowhead vine — 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 sansevieria eilensis
- How to fertilise sansevieria gracilis
- How to fertilise sansevieria kirkii
- All 6887 fertilising guides in the Growli library