Paphiopedilum Saint Swithin is a classic primary hybrid within the multifloral Paphiopedilums. The hybrid combines the imposing, striped flower form of the polyantha group with an inflorescence that can bear multiple flowers at once when mature. The growth type with longer, strap-shaped leaves allows the plant to develop into a distinct, sturdy tussock over time, with stability in light, moisture and temperature making all the difference.
Origin
This cross does not occur in the wild and is registered as a hybrid. The parent plants are Paphiopedilum rothschildianum and Paphiopedilum philippinense.
Paphiopedilum rothschildianum has a natural distribution in Borneo, Sabah according to Kew and grows in a wet tropical climate.
Paphiopedilum philippinense is found from northern Borneo to the Philippines, according to Kew, and also belongs to a wet tropical climate.
The combination explains why Saint Swithin in culture often responds most predictably to bright, filtered light and an evenly moist substrate, without prolonged wetness.
Characteristics
The plant forms a growth form with longer, green leaves and builds up several growing points over the years. In mature specimens, a sturdy flowering stem appears that can usually bear multiple flowers, with the flower segments often being distinctly striped and the blooms having a distinct polyantha appearance. Because Saint Swithin is usually offered from seedlings, there may be variation in color intensity, markings and flower position, while the general character of a large-flowered, multifloral Paphiopedilum remains recognizable.
Care
Light
Bright, indirect light or partial shade fits best. Multifloral Paphiopedilums generally tolerate more light than many spotted leaf types, but direct sunlight behind glass remains a risk for leaf damage.
Temperature
An intermediate to warm range usually works most stably. Towards the growing period it may be warmer, while in the cooler months a slightly more moderate location often gives quieter growth without weakening the plant.
Substrate
An airy, bark-based Paphiopedilum mix with organic moisture buffer usually works reliably, as long as the substrate does not clog up and the roots retain sufficient oxygen. Regular changes help reduce structure loss and accumulation of salts.
Humidity
Increased humidity during the growing period supports even leaf development and bud formation, especially when combined with light air movement. In a living space, stable base humidity usually works better than temporary misting.
Nutrition
Mild, regular feeding during the growing season gives the most even establishment. A practical approach is low dosage and not at every watering, with flushing in between to keep the substrate clean.
Watering
The substrate should remain evenly moist, with no water left at the bottom. Paphiopedilums do not have pseudobulbs to cope with prolonged drought, so complete dehydration is usually counterproductive.
Preferably use demineralized water or rainwater, and flush liberally from time to time to limit salt build-up.
Flowering
The flowering period varies with growth stage and conditions, but a spring to fall season is often seen at Saint Swithin. Flowers tend to last a long time in stable temperatures, with a mature plant giving the most convincing blooms.
