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Fertilising guide

How to fertilise Calathea Network (Goeppertia kegeljanii 'Network')— schedule & NPK

Also called Calathea Network, Calathea musaica Network.

More about calathea network

About Calathea Network

Goeppertia kegeljanii 'Network' · also called Calathea Network, Calathea musaica Network · houseplant

Calathea Network, the mosaic plant, has bright apple-green leaves covered in an intricate, tessellated grid of tiny rectangles like a fine net. It is one of the more forgiving calatheas but still wants warmth, high humidity and consistently moist filtered water in bright indirect light. Pet-safe, with minimal nyctinastic leaf movement compared with other prayer plants.

Growth habit: A clumping, rhizomatous prayer plant that forms a dense rosette of upright leaves rising from the base. Its nyctinastic movement is subtler than most calatheas, with only slight night folding. It spreads gradually via rhizomes and stays bushy rather than trailing.

Watch for — Washed-out or scorched leaves: Too much direct sun fades the network and burns the foliage. Move to bright indirect light to preserve the mosaic pattern.

What fertiliser calathea network actually wants — and why

Calathea Network 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 network: 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 network, 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 network:

Feed monthly in spring and summer with a balanced liquid houseplant fertiliser at half strength. It is a light feeder sensitive to salt accumulation, so err toward under-feeding, flush the soil occasionally and stop feeding in autumn and winter. 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 calathea network 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 network

Half strength is the safe default for calathea network — 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 network first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the calathea network watering schedule.

Signs you are over-feeding calathea network

Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for calathea network:

Signs you are under-feeding calathea network

If the symptoms point at watering, light or roots rather than nutrition, the full calathea network care brief covers soil, humidity and the common problems for this species.

Flushing and leaching the salts

Flush the pot of calathea network 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 network

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 network — frequently asked questions

What fertiliser does calathea network 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 Network 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 network?

Feed monthly in spring and summer with a balanced liquid houseplant fertiliser at half strength. It is a light feeder sensitive to salt accumulation, so err toward under-feeding, flush the soil occasionally and stop feeding in autumn and winter. Feed monthly in spring and summer with a balanced liquid houseplant fertiliser at half strength. It is a light feeder sensitive to salt accumulation, so err toward under-feeding, flush the soil occasionally and stop feeding in autumn and winter. 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 calathea network?

Half strength is the safe default for calathea network — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.

What does over-feeding calathea network 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 network 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 network?

Flush the pot of calathea network 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.

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