Promenaea silvana is a medium sized sympodial orchid. The rounded to ovoid pseudobulbs grow relatively close to each other. Each pseudobulb carries two sharp lanceolate, bright green leaves. This species could produce flowers from the end of spring to the beginning of summer. The single flowered inflorescences arise from the base of the pseudobulb. The flowers reach a maximum size of around 4 centimeters and are bright yellow. The labellum is yellow with horizontally striped, orange markings that show variable patterns. In some variants, the labellum is only yellow. Propagation is done by division. Make sure that every division contains at least three pseudobulbs.

Promenaea silvana grows epiphytically on mossy branches of trees. This species occurs naturally in damp forests between 500 and 1000 meters in altitude. This is a suitable botanical orchid for beginners. For this species, provide day temperatures between 16 and 25 degrees Celsius. At nighttime, a drop in temperature of around 5 degrees stimulates growth. Ideally, humidity is higher than 70% in its growing environment. When humidity is very high, it is possible to grow this species mounted on bark or other media. Allow for optimal ventilation. The ideal potting media is an airy mix for epiphytes and could consist of medium sized bark. Place this plant in bright indirect light. Water this species regularly in the growing season which lasts normally from spring till summer. It is possible to let the medium dry out a little bit in between waterings, but never let it go bone dry. In autumn and winter, it could be stored in a cooler place. Fertilize this orchid weekly with a recommended dosage of specialized orchid fertilizer.