Cattleya Portia gx
A medium to large-sized, evergreen, epiphytic orchid with long, upright, club-shaped stems growing from a short creeping rhizome. Each mature stem can reach up to 90cm, carrying one or two (rarely three), firm, dark green, mid-glossy leaves. The leaves are thick and leathery, broadly-oval, up to 20cm long and 6cm wide. Up to 15 flowers are carried on 25cm long, terminal stems arising from the tips of new mature growth from autumn to early spring. Flowers are approximately 8-10cm across, pale or bright pink, sometimes pale lilac - depending on cultivar. The lip is ofter darker in the lower half and pale yellow or white inside.
Ultimate height0.5–1 metres
Time to ultimate height5–10 years
Ultimate spread0.1–0.5 metres
MoistureWell–drained, Moist but well–drained
Colour & scent
|Spring||Pink Purple White Yellow||Green|
|Autumn||Pink Purple White Yellow||Green|
|Winter||Pink Purple White Yellow||Green|
- Full sun
- Partial shade
East–facing or South–facing or West–facing
ExposureExposed or Sheltered
- Native to the UK
- Clump forming
- Name status
How to grow
Grow in an open, coarse bark-based orchid mix with addition of perlite and coconut chips. Provide bright light conditions, but shade from hot, direct mid-day sun. Ideal temperatures are 15°C minimum in winter and up to maximum of 28°C during summer. Water and feed plants regularly during the growing season. Ensure that all water drains away, preventing the plant sitting in water. Provide enough humidity by regular misting. Reduce watering and feeding in winter months and keep in a bright, sunny position. As with many orchids, they grow best when well-established and slightly pot-bound. Re-potting should be only done if the plant overgrows its container or before the potting mix starts to deteriorate - approximately once in 2-3 years. The plant should only be re-potted when the new growth appears in spring. See also indoor orchid cultivation
Mature plants may be divided when the plant overgrows its container. Each division should have at least 3 older growths with a sufficient amount of stored energy and water, to support new growth and reduce stress after repotting.
Suggested planting locations and garden types
- Conservatory and greenhouse
No pruning required.
Generally disease-free. Poor air movement may cause bacterial or fungal rots. Good hygiene practice and sterilising cutting tools prevent the spread of virus diseases.
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