Fertilising guide
How to fertilise Aeschynanthus tricolor (Aeschynanthus tricolor)— schedule & NPK
Also called tricolor lipstick plant, three-colour aeschynanthus.
More about aeschynanthus tricolor
About Aeschynanthus tricolor
Aeschynanthus tricolor · also called tricolor lipstick plant, three-colour aeschynanthus · flowering
Aeschynanthus tricolor is a trailing Bornean lipstick plant in the gesneriad family, grown for striking tubular red flowers marked with yellow and dark maroon-black stripes. A warm-growing epiphyte, it thrives in bright indirect light, high humidity, and a fast-draining mix, cascading beautifully from a hanging basket. Crucially, the whole Aeschynanthus genus is ASPCA non-toxic to cats and dogs.
Growth habit: Trailing/pendent epiphyte with cascading stems of waxy leaves, well suited to hanging baskets; tubular flowers emerge from dark calyces at the shoot tips.
Watch for — No flowers: Too little light or over-feeding with high nitrogen. Give brighter indirect light and a balanced or bloom feed; a slightly snug pot also encourages blooming.
What fertiliser aeschynanthus tricolor actually wants — and why
Aeschynanthus tricolor 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 aeschynanthus tricolor: 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 aeschynanthus tricolor, 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 aeschynanthus tricolor:
Feed every one to two weeks through spring and summer with a balanced or bloom-boosting liquid fertiliser at half strength; this fuels its prolific flowering. Cut back to monthly or none in autumn and winter while growth slows. Treat that as monthly 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 aeschynanthus tricolor 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 aeschynanthus tricolor
Half strength is the safe default for aeschynanthus tricolor — 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 aeschynanthus tricolor first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the aeschynanthus tricolor watering schedule.
Signs you are over-feeding aeschynanthus tricolor
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for aeschynanthus tricolor:
- 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 aeschynanthus tricolor
- 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 aeschynanthus tricolor care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of aeschynanthus tricolor 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 aeschynanthus tricolor
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 aeschynanthus tricolor — frequently asked questions
What fertiliser does aeschynanthus tricolor 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. Aeschynanthus tricolor 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 aeschynanthus tricolor?
Feed every one to two weeks through spring and summer with a balanced or bloom-boosting liquid fertiliser at half strength; this fuels its prolific flowering. Cut back to monthly or none in autumn and winter while growth slows. Feed every one to two weeks through spring and summer with a balanced or bloom-boosting liquid fertiliser at half strength; this fuels its prolific flowering. Cut back to monthly or none in autumn and winter while growth slows. Treat that as monthly 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 aeschynanthus tricolor?
Half strength is the safe default for aeschynanthus tricolor — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding aeschynanthus tricolor 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 aeschynanthus tricolor 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 aeschynanthus tricolor?
Flush the pot of aeschynanthus tricolor 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
- Aeschynanthus tricolor care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water aeschynanthus tricolor — 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 peace lily
- How to fertilise bird of paradise
- How to fertilise hoya
- All 3899 fertilising guides in the Growli library