Fertilising guide

How to fertilise Corsage Orchid (Cattleya labiata)— schedule & NPK

Also called Crimson Cattleya, Ruby-Lipped Cattleya.

More about corsage orchid

About Corsage Orchid

Cattleya labiata · also called Crimson Cattleya, Ruby-Lipped Cattleya · flowering

Cattleya labiata is the classic large-flowered corsage orchid, producing showy, fragrant lavender-pink blooms with a deep ruby, ruffled lip in autumn. An epiphyte from Brazilian forests, it grows from plump pseudobulbs, loves bright light and a wet-then-dry cycle, and is the founding species of the Cattleya alliance.

Growth habit: Sympodial epiphyte; a creeping rhizome produces club-shaped pseudobulbs, each topped by a single leathery leaf and a sheath that yields the large flowers.

What fertiliser corsage orchid actually wants — and why

Corsage Orchid is feeding to flower, not to grow leaves — it needs a higher-phosphorus / specialist bloom feed, given little and often, to set and hold its display.

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 corsage orchid: 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 corsage orchid, 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 corsage orchid:

Feed every 1-2 weeks with a balanced orchid fertiliser at quarter to half strength during active growth, flushing monthly with plain water. Reduce feeding in winter when growth slows. The pattern that matters: feed little and often through active growth and budding — every 1-2 weeks — and ease right off during the rest period that triggers the next flush.

The dormant-season rule matters more than the exact interval: skip feeding entirely when corsage orchid 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 corsage orchid

Very dilute — quarter strength, the classic "weakly, weekly" approach for corsage orchid. These plants have fine roots that scorch easily and a steady trickle beats an occasional strong dose for flowering.

Feeding always goes onto already-damp soil, never dry roots — water corsage orchid first if the soil is dry, then apply the diluted feed. The companion question is when to water at all, covered in the corsage orchid watering schedule.

Signs you are over-feeding corsage orchid

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

Lush green leaves but few or no flowers (too much nitrogen).
Brown, scorched leaf tips and edges — a classic fine-root burn.
White salt crust on the medium or pot, and stalled buds.
Bud blast: buds forming then shrivelling and dropping.

Signs you are under-feeding corsage orchid

Sparse or no flowering despite good light and the right season.
Smaller, paler new leaves and a generally weak, tired plant.
Flowers that are smaller or fade faster than they should.

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

Flushing and leaching the salts

Specialist and bloom feeds leave salts that scorch fine roots — flush corsage orchid thoroughly with plain water until it runs clear every 4-6 weeks in the feeding season, and always between feeds for orchids.

Organic vs synthetic feeds for corsage orchid

Organic options

Gentler options exist: a dilute seaweed feed (mildly potassium-rich) or worm-casting tea. UK: Westland seaweed, or a dilute tomato feed like Tomorite for bud-formers; US: Espoma Orchid! / Violet! or Neptune's Harvest. Lower burn risk, slower response.

Synthetic / liquid feeds

A species-matched bloom feed at quarter strength — UK: Baby Bio Orchid / African Violet food, or a high-potash Tomorite/Phostrogen for budding bloomers; US: Miracle-Gro Orchid or Bloom Booster, Schultz African Violet.

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 corsage orchid — frequently asked questions

What fertiliser does corsage orchid need?

A higher-phosphorus "bloom" formula or a species-specific feed (orchid food, African violet food, or a tomato-style high-potash/phosphorus liquid). A high-nitrogen general feed gives you lush leaves and almost no flowers. Corsage Orchid is feeding to flower, not to grow leaves — it needs a higher-phosphorus / specialist bloom feed, given little and often, to set and hold its display.

How often should I feed corsage orchid?

Feed every 1-2 weeks with a balanced orchid fertiliser at quarter to half strength during active growth, flushing monthly with plain water. Reduce feeding in winter when growth slows. Feed every 1-2 weeks with a balanced orchid fertiliser at quarter to half strength during active growth, flushing monthly with plain water. Reduce feeding in winter when growth slows. The pattern that matters: feed little and often through active growth and budding — every 1-2 weeks — and ease right off during the rest period that triggers the next flush.

What strength of feed for corsage orchid?

What does over-feeding corsage orchid look like?

Lush green leaves but few or no flowers (too much nitrogen). Brown, scorched leaf tips and edges — a classic fine-root burn. White salt crust on the medium or pot, and stalled buds. Bud blast: buds forming then shrivelling and dropping. Using an ordinary high-nitrogen houseplant feed on corsage orchid is the headline mistake — you get a healthy-looking plant that simply refuses to bloom. The second is feeding through the rest period and breaking the dormancy cue it needs to set buds.

Should I flush the soil of corsage orchid?