Contents
Introduction and History
In commerce, the name Cambria is used for a broad group of intergeneric hybrids from the Oncidiinae subtribe. The commercial nothogenus “Cambria” includes hybrids such as Beallara, Burrageara, Colmanara, Miltonidium, Odontocidium, Odontoglossum (in the horticultural sense), Vuylstekeara, Wilsonara, and others. The main parents come from genera like Odontoglossum, Oncidium, Miltonia, Cochlioda, and Brassia.
A nothogenus is, in horticultural taxonomy, a “genus” grouping hybrid plants resulting from crosses between different species or genera. The term comes from Greek: nothos (bastard) + genos (genus).
The first important line in this direction was obtained by Charles Vuylsteke in 1911, from crossing Odontoglossum crispum × Miltonia × Cochlioda noetzliana, named Vuylstekeara in his honor. Almost a decade later, Vuylstekeara Cambria Plush (Vuylstekeara × Odontoglossum Clonius) appeared, awarded by RHS and AOS. Since then, intergeneric hybridization has exploded, producing spectacular flowers in shape, color, and fragrance.
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About Growing Conditions
Temperatures, humidity, lux, and watering frequency are indicative values. The variability within the Cambria nothogenus is large: some lines resemble Odontoglossum (cooler), others Oncidium (warmer). Observe the leaves, pseudobulbs, and fine roots before enforcing a single regimen.
Habit and Flowering
The nothogenus is distinguished by strongly flattened pseudobulbs, from which leaves and flower spikes emerge. The number of flowers per spike can vary from few (around 3) to dozens (up to about 70 in some lines). At the end of flowering, plants produce young pseudobulbs that restart the cycle. Colors are intense: red, violet, orange, yellow, white, with spots, blotches, or lines in strong contrast. Flowering can occur spontaneously in any season. Growth is generally easy if roots are not kept permanently wet.
Pot and Substrate
Although the plants are robust, the root system is sensitive: roots are thin and fragile. Usually, opaque pots (not transparent), made of plastic or porous materials like ceramic, possibly perforated, are used to protect roots from light as well as to provide ventilation and drainage.
Recommended substrate: small-grain conifer bark (about 3–9 mm), alone or mixed with sphagnum, coconut fiber, and perlite or vermiculite. At Secret Garden, there is a dedicated product: Premium substrate for Cambria, Cymbidium, Oncidium, Zygopetalum, and Dendrobium.
Temperature, Humidity, Light
Temperature. Indicatively between 18–28°C as an average working range. Tolerates temporary variations well.
Humidity. Indicatively 55–80%, with good ventilation.
Light. Medium to strong, approximately 20,000–35,000 lux — in the range where hybrids approach the needs of Vanda and Cattleya. However, leaves are more fragile: from March to September, partial shading is recommended for diffuse light that does not burn the leaves.
Watering and Fertilizing
Watering should be moderate. Excess water is poorly tolerated outside periods of intense consumption (including flowering). Lack of water is visible in leaves that develop slowly, with a transversely wrinkled appearance. The substrate should be kept moist, not wet; slight drying between waterings is allowed.
Fertilizing is done during growth, diluted (usually 25–50% of the package dose), after watering. In winter or during stagnation, reduce fertilization.
Common Problems
- Soft, short roots = pot too wet, degraded substrate, lack of air
- Burned leaves = direct spring-summer sun
- Wrinkled leaves, slow growth = insufficient watering or weak roots
- No flowers = too little light or recently divided plant / without mature pseudobulbs
Frequently Asked Questions
Why is it called “Cambria” if the label says Vuylstekeara or Wilsonara?
“Cambria” is an umbrella commercial name for many Oncidiinae hybrids. The name on the label (Vuylstekeara, Wilsonara, etc.) is often more precise botanically and horticulturally.
Can I use a transparent pot like for Phalaenopsis?
It is not ideal. Cambria’s fine roots generally prefer an opaque pot and a substrate with smaller grain size, well aerated.
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