Fertilising guide
How to fertilise Calathea White Star (Goeppertia majestica 'White Star')— schedule & NPK
Also called white star calathea, white star prayer plant.
More about calathea white star
About Calathea White Star
Goeppertia majestica 'White Star' · also called white star calathea, white star prayer plant · houseplant
Calathea 'White Star' is a showy prayer plant with large, elliptic leaves striped in fine white-to-pink pinstripes radiating from the midrib, over deep green and flushed pink, with purple undersides. Like its relatives it folds its leaves up at night. It demands warmth, high humidity, even moisture, and soft water, and rewards careful care with luminous, eye-catching foliage.
Growth habit: Clumping, upright prayer plant grown from rhizomes, with large oval patterned leaves on slender stalks that rise at night and lower by day (nyctinasty). It spreads slowly into a fuller, bushy clump.
Watch for — Faded or scorched striping: Too much direct sun bleaches the white-and-pink pattern and burns the leaves. Move to bright, indirect light.
What fertiliser calathea white star actually wants — and why
Calathea White Star 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 calathea white star: 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 calathea white star, 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 calathea white star:
Feed every 4-6 weeks in spring and summer with a balanced liquid fertiliser at half strength; stop in winter. Sensitive to fertiliser salts, so feed lightly and flush the soil occasionally to avoid tip and edge burn. Treat that as every 4-6 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 calathea white star 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 calathea white star
Half strength is the safe default for calathea white star — 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 calathea white star first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the calathea white star watering schedule.
Signs you are over-feeding calathea white star
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for calathea white star:
- 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 calathea white star
- 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 calathea white star care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of calathea white star 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 calathea white star
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 calathea white star — frequently asked questions
What fertiliser does calathea white star 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. Calathea White Star 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 calathea white star?
Feed every 4-6 weeks in spring and summer with a balanced liquid fertiliser at half strength; stop in winter. Sensitive to fertiliser salts, so feed lightly and flush the soil occasionally to avoid tip and edge burn. Feed every 4-6 weeks in spring and summer with a balanced liquid fertiliser at half strength; stop in winter. Sensitive to fertiliser salts, so feed lightly and flush the soil occasionally to avoid tip and edge burn. Treat that as every 4-6 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 calathea white star?
Half strength is the safe default for calathea white star — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding calathea white star 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 calathea white star 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 calathea white star?
Flush the pot of calathea white star 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
- Calathea White Star care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water calathea white star — 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 snake plant
- How to fertilise dracaena
- How to fertilise peperomia
- All 2464 fertilising guides in the Growli library