Fertilising guide
How to fertilise Hygrophila lancea 'Araguaia' (Hygrophila lancea 'Araguaia')— schedule & NPK
Also called Araguaia hygro, lance hygrophila.
More about hygrophila lancea 'araguaia'
About Hygrophila lancea 'Araguaia'
Hygrophila lancea 'Araguaia' · also called Araguaia hygro, lance hygrophila · tropical
A fully submerged aquarium stem plant prized for narrow lance-shaped leaves that flush coppery-red to purple under strong light. A mid-to-background aquascaping plant, it rewards high-tech tanks with CO2 injection and rich substrate, growing compact and bushy. Slower than most hygrophilas, it stays manageable but needs stable parameters to hold its colour.
Growth habit: Upright, branching submerged stem plant that forms a dense bushy clump; comparatively slow and compact for a hygrophila, holding a tidy mound rather than racing to the surface.
Watch for — Stunted or twisted tips: Usually a micronutrient deficiency or fluctuating CO2. Stabilise CO2 across the photoperiod and ensure adequate magnesium, calcium and trace elements.
What fertiliser hygrophila lancea 'araguaia' actually wants — and why
Hygrophila lancea 'Araguaia' 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 hygrophila lancea 'araguaia': 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 hygrophila lancea 'araguaia', 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 hygrophila lancea 'araguaia':
Dose a full liquid macro and micro fertiliser regimen in the water column (nitrate, phosphate, potassium plus trace/iron) plus root tabs in the substrate. Lean dosing with consistent iron supports the strongest red coloration. 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 hygrophila lancea 'araguaia' 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 hygrophila lancea 'araguaia'
Half strength is the safe default for hygrophila lancea 'araguaia' — 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 hygrophila lancea 'araguaia' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the hygrophila lancea 'araguaia' watering schedule.
Signs you are over-feeding hygrophila lancea 'araguaia'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for hygrophila lancea 'araguaia':
- 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 hygrophila lancea 'araguaia'
- 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 hygrophila lancea 'araguaia' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of hygrophila lancea 'araguaia' 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 hygrophila lancea 'araguaia'
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 hygrophila lancea 'araguaia' — frequently asked questions
What fertiliser does hygrophila lancea 'araguaia' 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. Hygrophila lancea 'Araguaia' 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 hygrophila lancea 'araguaia'?
Dose a full liquid macro and micro fertiliser regimen in the water column (nitrate, phosphate, potassium plus trace/iron) plus root tabs in the substrate. Lean dosing with consistent iron supports the strongest red coloration. Dose a full liquid macro and micro fertiliser regimen in the water column (nitrate, phosphate, potassium plus trace/iron) plus root tabs in the substrate. Lean dosing with consistent iron supports the strongest red coloration. 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 hygrophila lancea 'araguaia'?
Half strength is the safe default for hygrophila lancea 'araguaia' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding hygrophila lancea 'araguaia' 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 hygrophila lancea 'araguaia' 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 hygrophila lancea 'araguaia'?
Flush the pot of hygrophila lancea 'araguaia' 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
- Hygrophila lancea 'Araguaia' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water hygrophila lancea 'araguaia' — 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