Angraecum viguieri is also called Viguier's Angraecum.
It is a species of the genus Angraecum. This species was described by Friedrich Richard Rudolf Schlechter in 1922.
Angraecum viguieri is indigenous to Madagascar, where it grows epiphytically, sometimes in almost full sun, at an altitude of around 900 meters. It is a medium to large sized, cool to cold growing epiphyte with a single, fragrant flower. The flower is pure white, and various parts of the flowers are tinted with different combinations of brown, green, orange, and yellow.
Light:
Angraecum viguieri needs a light level of 25000-35000 lux. Light should be rather bright but filtered or diffused, and plants should not be exposed to direct midday sun. Strong air movement should be provided at all times.
Temperature:
Summer days temperature at average 24°C, and nights temperature at average 17-18°C, with a diurnal range of 7°C. Winter days temperature at average 18-19°C, and nights average 12-13°C, with a diurnal range of 6-7°C.
Humidity:
Angraecum viguieri need the humidity of near 85% most of the year, dropping to near 80% for 2-3 months in spring.
Substrate, growing media and repotting:
Because Angraecum viguieri are particularly sensitive to having their roots disturbed, they probably are best grown mounted tightly to a tree-fern or cork slab. If mounted, however, high humidity must be maintained and the plants drenched daily in summer as long as they are able to dry off by night. Several waterings a day may be necessary for mounted plants during extremely hot, dry weather. Plants may also be grown in pots or baskets filled with fine to medium fir bark. The medium should not become extremely dry, but it should never be allowed to become stale or soggy.
Repotting or dividing should be done only when new root growth is just starting. This allows the plant to become established in the shortest possible time with the least amount of stress.
Watering:
Rainfall is very heavy most of the year. Amounts decrease somewhat for a month or so in spring, but the habitat is never truly dry. Cultivated plants should be watered heavily while actively growing, but conditions around the roots should never become stale or soggy.
Fertilizer:
1/4-1/2 recommended strength, applied weekly when plants are actively growing. You can use a balanced fertilizer throughout the year, but also can use a high-nitrogen fertilizer from spring to midsummer, then switch to one high in phosphates in late summer and autumn.
Rest period:
In winter, water should be reduced somewhat for Angraecum viguieri, especially those grown in the dark, short-day conditions common in temperate latitudes. They should never be allowed to dry out completely, however. If water is reduced, fertilizer should also be reduced.