Fertilising guide
How to fertilise Spathoglottis plicata (Spathoglottis plicata)— schedule & NPK
Also called Philippine Ground Orchid, Pleated Spathoglottis, Large Purple Orchid.
More about spathoglottis plicata
About Spathoglottis plicata
Spathoglottis plicata · also called Philippine Ground Orchid, Pleated Spathoglottis · tropical
Spathoglottis plicata, the Philippine ground orchid, is an easy, evergreen tropical terrestrial grown widely in warm gardens for its near-continuous spikes of pink-to-purple flowers above pleated, palm-like leaves. It thrives in partial shade, warmth and steady moisture in a well-drained terrestrial mix, making it one of the most beginner-friendly ground orchids available.
Growth habit: Evergreen sympodial terrestrial with crowded above-ground pseudobulbs bearing tall, pleated, ribbed leaves; slender flower spikes rise above the foliage and open flowers in succession nearly year-round in warmth.
Watch for — Sun scorch: Direct midday sun bleaches and burns the soft pleated leaves. Move to partial shade or filtered light.
What fertiliser spathoglottis plicata actually wants — and why
Spathoglottis plicata 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 spathoglottis plicata: 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 spathoglottis plicata, 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 spathoglottis plicata:
A vigorous feeder. Apply a balanced liquid orchid or general fertiliser at half strength every 1-2 weeks in active growth, or use a slow-release granular feed. Higher nitrogen supports leafy growth; ease off feeding in cooler months. Treat that as every 1-2 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 spathoglottis plicata 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 spathoglottis plicata
Half strength is the safe default for spathoglottis plicata — 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 spathoglottis plicata first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the spathoglottis plicata watering schedule.
Signs you are over-feeding spathoglottis plicata
Over-feeding is far more common — and more damaging — than under-feeding for most plants. The classic tells for spathoglottis plicata:
- 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 spathoglottis plicata
- 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 spathoglottis plicata care brief covers soil, humidity and the common problems for this species.
Flushing and leaching the salts
Flush the pot of spathoglottis plicata 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 spathoglottis plicata
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 spathoglottis plicata — frequently asked questions
What fertiliser does spathoglottis plicata 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. Spathoglottis plicata 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 spathoglottis plicata?
A vigorous feeder. Apply a balanced liquid orchid or general fertiliser at half strength every 1-2 weeks in active growth, or use a slow-release granular feed. Higher nitrogen supports leafy growth; ease off feeding in cooler months. A vigorous feeder. Apply a balanced liquid orchid or general fertiliser at half strength every 1-2 weeks in active growth, or use a slow-release granular feed. Higher nitrogen supports leafy growth; ease off feeding in cooler months. Treat that as every 1-2 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 spathoglottis plicata?
Half strength is the safe default for spathoglottis plicata — houseplant feeds are formulated strong, and the diluted dose is gentler on the roots while still ample for foliage.
What does over-feeding spathoglottis plicata 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 spathoglottis plicata 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 spathoglottis plicata?
Flush the pot of spathoglottis plicata 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
- Spathoglottis plicata care — the full brief (light, soil, humidity, problems, pet safety)
- How often to water spathoglottis plicata — 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 monstera
- How to fertilise pothos
- How to fertilise fiddle leaf fig
- All 5561 fertilising guides in the Growli library