Overview
x Oncostele Stirbic gx is a climbing conservatory greenhouse in the genus Oncostele, part of the Orchidaceae family, with deciduous foliage. x Oncostele Stirbic gx grows best in full sun, and tolerates loam soils and neutral pH. Its UK hardiness is rated H6. Suggested uses include cottage and informal garden, wildlife gardens and wall side borders.
About
x Oncostele Stirbic gx is a cultivar within the hybrid orchid genus Oncostele, which includes species derived from both Oncidium and Rhynchostele. This deciduous climbing plant thrives in full sun with a south-facing, sheltered aspect and prefers moist but well-drained neutral loam soil. Suitable for cottage, informal, and wildlife gardens, as well as wall side borders, it is hardy to UK zone H6. Cultivation involves orchid bark and bright indirect light, with propagation possible through various cutting methods and seed requiring stratification. It offers interest throughout all seasons.
About the genus
× Oncostele, abbreviated Ons., is a hybrid genus of orchids, used for greges containing at least one ancestor species from the genera Oncidium (Onc.) and Rhynchostele (Rst.). The nothogenus was defined in 2003 by J. M.
Wikipedia contributors, "× Oncostele", CC BY-SA 4.0 — × Oncostele
Growing conditions
Best soil and position for Oncostele
- Sunlight
- Full sun
- Soil type
- Loam
- Soil pH
- Neutral
- Soil moisture
- Moist but well-drained
- Aspect
- South-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
x Oncostele Stirbic gx size, habit and characteristics
- Plant type
- Conservatory Greenhouse, Houseplants
- Habit
- Climbing
- Foliage
- Deciduous
- Suggested uses
- Cottage and informal garden, Wildlife gardens, Wall side borders
Care notes
Pruning and caring for x Oncostele Stirbic gx
- Propagation
- Softwood cuttings in early to mid spring, Hardwood cuttings in late summer to autumn, Chip budding in summer, Seed propagation (requires stratification)
- Pest resistance
- Aphids, Rose leafhopper, Glasshouse red spider mite, Scale insects, Caterpillars, Large rose sawfly, Rose slugworm sawfly, Rose leaf-rolling sawfly, Deer, Rabbits
- Disease resistance
- Rose black spot, Rose rust, Replant disease, Rose dieback, Rose powdery mildew, Honey fungus, Rose blindness, Flower balling
Frequently asked questions
Where is the best place to plant x Oncostele Stirbic gx?
x Oncostele Stirbic gx prefers full sun. It suits sheltered positions.
What soil does x Oncostele Stirbic gx need?
x Oncostele Stirbic gx grows best in loam soil. It prefers neutral soil. Aim for soil that stays moist but well-drained.
Is x Oncostele Stirbic gx hardy in the UK?
x Oncostele Stirbic gx has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate x Oncostele Stirbic gx?
Softwood cuttings in early to mid spring, Hardwood cuttings in late summer to autumn, Chip budding in summer, Seed propagation (requires stratification).