Fertilising guide
How to fertilise Rotala 'H'ra' (Rotala 'H'ra')— schedule & NPK
Also called Rotala Hira, compact pink Rotala.
More about rotala 'h'ra'
About Rotala 'H'ra'
Rotala 'H'ra' · also called Rotala Hira, compact pink Rotala · tropical
A popular aquascaping variety closely related to Rotala rotundifolia, valued for fine leaves that flush bright pink to red and stay compact under strong light. Slightly more demanding than standard rotundifolia for top colour, it is a favourite background and midground plant in high-tech planted tanks for its dense, colourful tops.
Growth habit: Upright branching stem plant that forms dense, fine-leaved colonies with brightly coloured tops; compact and bushy under good light, ideal for layered background groupings.
Watch for — Tip stunting: Micronutrient shortfall or CO2 instability deforms new growth. Stabilise CO2 and dose trace elements including iron and magnesium.
What fertiliser rotala 'h'ra' actually wants — and why
Rotala 'H'ra' 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 rotala 'h'ra': 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 rotala 'h'ra', 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 rotala 'h'ra':
Dose a complete macro and micro fertiliser with iron and trace emphasis for pink-red tops; keep nitrate slightly lean. Steady dosing maintains the dense, well-coloured canopy this variety is grown for. 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 rotala 'h'ra' 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 rotala 'h'ra'
Half strength is the safe default for rotala 'h'ra' — 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 rotala 'h'ra' first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the rotala 'h'ra' watering schedule.
Signs you are over-feeding rotala 'h'ra'
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for rotala 'h'ra':
- 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 rotala 'h'ra'
- 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 rotala 'h'ra' care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of rotala 'h'ra' 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 rotala 'h'ra'
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 rotala 'h'ra' — frequently asked questions
What fertiliser does rotala 'h'ra' 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. Rotala 'H'ra' 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 rotala 'h'ra'?
Dose a complete macro and micro fertiliser with iron and trace emphasis for pink-red tops; keep nitrate slightly lean. Steady dosing maintains the dense, well-coloured canopy this variety is grown for. Dose a complete macro and micro fertiliser with iron and trace emphasis for pink-red tops; keep nitrate slightly lean. Steady dosing maintains the dense, well-coloured canopy this variety is grown for. 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 rotala 'h'ra'?
Half strength is the safe default for rotala 'h'ra' — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding rotala 'h'ra' 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 rotala 'h'ra' 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 rotala 'h'ra'?
Flush the pot of rotala 'h'ra' 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
- Rotala 'H'ra' care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water rotala 'h'ra' — 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