Fertilising guide
How to fertilise Calathea Fasciata (Goeppertia fasciata (syn. Calathea fasciata))— schedule & NPK
Also called Calathea fasciata, Goeppertia fasciata, Prayer plant (fasciata).
More about calathea fasciata
About Calathea Fasciata
Goeppertia fasciata (syn. Calathea fasciata) · also called Calathea fasciata, Goeppertia fasciata · houseplant
Calathea fasciata (Goeppertia fasciata) is a compact prayer plant from Brazilian rainforests, prized for rounded deep-green leaves with pale striping and purple undersides. It wants bright indirect light, evenly moist soil with filtered or rainwater, and 50 percent-plus humidity. It is treated as pet-safe: not individually ASPCA-listed, but its genus is non-toxic.
Growth habit: Clump-forming, upright and spreading evergreen perennial that grows from non-invasive creeping rhizomes. Foliage folds upward at night (nyctinasty) like other prayer plants. Medium, fairly quick growth rate in warm, humid conditions; rarely flowers indoors.
Watch for — Faded or scorched foliage: Too much direct sun bleaches the striping and burns the leaves. Move to bright indirect light or filter the light with a sheer curtain.
What fertiliser calathea fasciata actually wants — and why
Calathea Fasciata 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 fasciata: 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 fasciata, 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 fasciata:
Feed every 2-4 weeks through spring and summer with a balanced houseplant fertiliser diluted to half strength. Stop or reduce feeding in autumn and winter. Calatheas are sensitive to fertiliser salt buildup, so flush the soil with plain water occasionally to prevent root burn and brown tips. 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 calathea fasciata 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 fasciata
Half strength is the safe default for calathea fasciata — 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 fasciata first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the calathea fasciata watering schedule.
Signs you are over-feeding calathea fasciata
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for calathea fasciata:
- 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 fasciata
- 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 fasciata care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of calathea fasciata 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 fasciata
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 fasciata — frequently asked questions
What fertiliser does calathea fasciata 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 Fasciata 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 fasciata?
Feed every 2-4 weeks through spring and summer with a balanced houseplant fertiliser diluted to half strength. Stop or reduce feeding in autumn and winter. Calatheas are sensitive to fertiliser salt buildup, so flush the soil with plain water occasionally to prevent root burn and brown tips. Feed every 2-4 weeks through spring and summer with a balanced houseplant fertiliser diluted to half strength. Stop or reduce feeding in autumn and winter. Calatheas are sensitive to fertiliser salt buildup, so flush the soil with plain water occasionally to prevent root burn and brown tips. 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 calathea fasciata?
Half strength is the safe default for calathea fasciata — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding calathea fasciata 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 fasciata 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 fasciata?
Flush the pot of calathea fasciata 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 Fasciata care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water calathea fasciata — 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 609 fertilising guides in the Growli library