Fertilising guide
How to fertilise Echinodorus 'Red Flame' (Echinodorus 'Red Flame')— schedule & NPK
Also called Red Flame sword, red Amazon sword.
More about echinodorus 'red flame'
About Echinodorus 'Red Flame'
Echinodorus 'Red Flame' · also called Red Flame sword, red Amazon sword · tropical
A colourful sword hybrid whose broad leaves emerge green flecked with crimson and mature to deep red-spotted, fiery tones under good light. As hardy as the rest of the genus, it forms a bold rosette centrepiece, feeds heavily through its roots, and rewards bright light and iron dosing with its most intense colouration.
Growth habit: Large solitary rosette with a strong crown; produces flower/runner stalks bearing plantlets rather than spreading by underground runners.
Watch for — Pale, translucent new leaves: Iron shortage in lean substrate. Increase root-tab iron and trace-element dosing.
What fertiliser echinodorus 'red flame' actually wants — and why
Echinodorus 'Red Flame' 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 echinodorus 'red flame': 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 echinodorus 'red flame', 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 echinodorus 'red flame':
Iron is the key driver of red colour — use iron-rich root tabs every 2-3 months plus a weekly liquid iron/trace fertiliser. Without ample iron the leaves stay green and may pale. Treat that as every 2-3 months 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 echinodorus 'red flame' 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 echinodorus 'red flame'
Half strength is the safe default for echinodorus 'red flame' — 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 echinodorus 'red flame' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the echinodorus 'red flame' watering schedule.
Signs you are over-feeding echinodorus 'red flame'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for echinodorus 'red flame':
- 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 echinodorus 'red flame'
- 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 echinodorus 'red flame' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of echinodorus 'red flame' 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 echinodorus 'red flame'
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 echinodorus 'red flame' — frequently asked questions
What fertiliser does echinodorus 'red flame' 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. Echinodorus 'Red Flame' 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 echinodorus 'red flame'?
Iron is the key driver of red colour — use iron-rich root tabs every 2-3 months plus a weekly liquid iron/trace fertiliser. Without ample iron the leaves stay green and may pale. Iron is the key driver of red colour — use iron-rich root tabs every 2-3 months plus a weekly liquid iron/trace fertiliser. Without ample iron the leaves stay green and may pale. Treat that as every 2-3 months 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 echinodorus 'red flame'?
Half strength is the safe default for echinodorus 'red flame' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding echinodorus 'red flame' 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 echinodorus 'red flame' 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 echinodorus 'red flame'?
Flush the pot of echinodorus 'red flame' 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
- Echinodorus 'Red Flame' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water echinodorus 'red flame' — 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 monstera
- How to fertilise pothos
- How to fertilise fiddle leaf fig
- All 5561 fertilising guides in the Growli library