Fertilising guide
How to fertilise Ashanti Blood (Mussaenda erythrophylla)— schedule & NPK
Also called Ashanti Blood, Red Flag Bush, Tropical Dogwood, Prophet's Tears.
More about ashanti blood
About Ashanti Blood
Mussaenda erythrophylla · also called Ashanti Blood, Red Flag Bush · tropical
Ashanti Blood is a striking deciduous tropical shrub from West Africa, prized for its vivid blood-red enlarged sepals (bracts) that frame small yellow flowers from spring through autumn. It thrives in full sun with consistently moist, well-drained organic soil and high humidity. A magnet for butterflies and hummingbirds, it is superb as a specimen or in tropical borders.
Growth habit: Multi-stemmed, arching, semi-deciduous to deciduous tropical shrub; can be trained as a rambler
Watch for — Bract colour fading: Insufficient light is the most common cause of pale or washed-out red bracts. Move to a position with full sun. Also ensure consistent feeding with a potassium-balanced fertiliser; potassium deficiency can dull bract pigmentation. Over-shaded plants also tend to produce fewer bracts overall.
What fertiliser ashanti blood actually wants — and why
Ashanti Blood 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 ashanti blood: 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 ashanti blood, 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 ashanti blood:
Feed with a balanced liquid fertiliser (e.g., 20-20-20) every 2–3 weeks from March to September during active growth. Incorporate slow-release pellets at the start of the growing season as a base feed. Avoid heavy feeding in winter when the plant is dormant. Potassium-rich feeds support bract colour and intensity. 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 ashanti blood 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 ashanti blood
Half strength is the safe default for ashanti blood — 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 ashanti blood first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the ashanti blood watering schedule.
Signs you are over-feeding ashanti blood
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for ashanti blood:
- 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 ashanti blood
- 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 ashanti blood care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of ashanti blood 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 ashanti blood
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 ashanti blood — frequently asked questions
What fertiliser does ashanti blood 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. Ashanti Blood 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 ashanti blood?
Feed with a balanced liquid fertiliser (e.g., 20-20-20) every 2–3 weeks from March to September during active growth. Incorporate slow-release pellets at the start of the growing season as a base feed. Avoid heavy feeding in winter when the plant is dormant. Potassium-rich feeds support bract colour and intensity. Feed with a balanced liquid fertiliser (e.g., 20-20-20) every 2–3 weeks from March to September during active growth. Incorporate slow-release pellets at the start of the growing season as a base feed. Avoid heavy feeding in winter when the plant is dormant. Potassium-rich feeds support bract colour and intensity. 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 ashanti blood?
Half strength is the safe default for ashanti blood — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding ashanti blood 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 ashanti blood 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 ashanti blood?
Flush the pot of ashanti blood 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
- Ashanti Blood care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water ashanti blood — 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 caladium candidum
- How to fertilise caladium moonlight
- How to fertilise caladium florida elise
- All 6887 fertilising guides in the Growli library