Fertilising guide
How to fertilise Ruellia makoyana (Ruellia makoyana)— schedule & NPK
Also called Monkey plant, Trailing velvet plant.
More about ruellia makoyana
About Ruellia makoyana
Ruellia makoyana · also called Monkey plant, Trailing velvet plant · tropical
Ruellia makoyana, the monkey plant, is a low, trailing Brazilian tropical grown for velvety olive-green leaves with silvery veins and purple undersides, plus rosy-pink trumpet flowers. It loves warmth, high humidity, and bright filtered light, making an excellent hanging-basket or terrarium plant where its spreading, soft-textured stems can cascade.
Growth habit: Low, spreading, trailing-to-decumbent evergreen perennial; stems root where they touch moist soil. Pinch tips to keep it bushy and to encourage cascading growth in baskets.
What fertiliser ruellia makoyana actually wants — and why
Ruellia makoyana 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 ruellia makoyana: 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 ruellia makoyana, 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 ruellia makoyana:
Feed every 2-4 weeks in spring and summer with a balanced liquid houseplant fertiliser at half strength to support foliage and flowering. Stop feeding in winter when growth slows. Treat that as every 2-4 weeks 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 ruellia makoyana 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 ruellia makoyana
Half strength is the safe default for ruellia makoyana — 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 ruellia makoyana first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the ruellia makoyana watering schedule.
Signs you are over-feeding ruellia makoyana
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for ruellia makoyana:
- 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 ruellia makoyana
- 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 ruellia makoyana care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of ruellia makoyana 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 ruellia makoyana
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 ruellia makoyana — frequently asked questions
What fertiliser does ruellia makoyana 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. Ruellia makoyana 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 ruellia makoyana?
Feed every 2-4 weeks in spring and summer with a balanced liquid houseplant fertiliser at half strength to support foliage and flowering. Stop feeding in winter when growth slows. Feed every 2-4 weeks in spring and summer with a balanced liquid houseplant fertiliser at half strength to support foliage and flowering. Stop feeding in winter when growth slows. Treat that as every 2-4 weeks 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 ruellia makoyana?
Half strength is the safe default for ruellia makoyana — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding ruellia makoyana 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 ruellia makoyana 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 ruellia makoyana?
Flush the pot of ruellia makoyana 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
- Ruellia makoyana care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water ruellia makoyana — 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