Fertilising guide
How to fertilise Roxburgh's Typhonium (Typhonium roxburghii)— schedule & NPK
Also called Roxburgh's Typhonium, Dwarf Voodoo Lily.
More about roxburgh's typhonium
About Roxburgh's Typhonium
Typhonium roxburghii · also called Roxburgh's Typhonium, Dwarf Voodoo Lily · tropical
Roxburgh's Typhonium is a diminutive Asian aroid reaching only 10–15 cm, producing small glossy triangular leaves and velvety deep maroon spathes repeatedly through summer. Best grown in containers in a sheltered semi-shaded spot, it requires a warm, frost-free dormancy in winter. A curious collector's plant with a brief, pungent floral scent that attracts pollinators.
Growth habit: Dwarf tuberous geophyte; produces small glossy triangular leaves and repeated summer spathes from tiny tubers; fully winter dormant
What fertiliser roxburgh's typhonium actually wants — and why
Roxburgh's Typhonium 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 roxburgh's typhonium: 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 roxburgh's typhonium, 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 roxburgh's typhonium:
Apply a dilute balanced liquid fertiliser (half-strength, 10-10-10) every 3–4 weeks during active growth in spring and summer. Do not feed dormant tubers in winter. A light top-dressing of slow-release fertiliser at repotting in spring is also effective. 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 roxburgh's typhonium 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 roxburgh's typhonium
Half strength is the safe default for roxburgh's typhonium — 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 roxburgh's typhonium first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the roxburgh's typhonium watering schedule.
Signs you are over-feeding roxburgh's typhonium
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for roxburgh's typhonium:
- 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 roxburgh's typhonium
- 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 roxburgh's typhonium care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of roxburgh's typhonium 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 roxburgh's typhonium
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 roxburgh's typhonium — frequently asked questions
What fertiliser does roxburgh's typhonium 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. Roxburgh's Typhonium 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 roxburgh's typhonium?
Apply a dilute balanced liquid fertiliser (half-strength, 10-10-10) every 3–4 weeks during active growth in spring and summer. Do not feed dormant tubers in winter. A light top-dressing of slow-release fertiliser at repotting in spring is also effective. Apply a dilute balanced liquid fertiliser (half-strength, 10-10-10) every 3–4 weeks during active growth in spring and summer. Do not feed dormant tubers in winter. A light top-dressing of slow-release fertiliser at repotting in spring is also effective. 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 roxburgh's typhonium?
Half strength is the safe default for roxburgh's typhonium — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding roxburgh's typhonium 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 roxburgh's typhonium 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 roxburgh's typhonium?
Flush the pot of roxburgh's typhonium 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
- Roxburgh's Typhonium care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water roxburgh's typhonium — 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 drakensberg cycad
- How to fertilise dark green ceratozamia
- How to fertilise whitelock's ceratozamia
- All 8452 fertilising guides in the Growli library