Download phaius tankervilliae (grandifolius)

PHAIUS TANKERVILLIAE (GRANDIFOLIUS)
The Nun's Orchid
A terrestrial orchid sometimes referred to as P. grandifolius is
commonly called 'Nun's Orchid' or 'Nun's Hood Orchid'. Phaius
offers an interesting "new" spring flowering pot plant for the
tropical foliage grower or landscaper as well as a potential new
cut flower crop. A vigorous plant with thin, pleated leaves
produces erect flower spikes to 4 feet high with numerous
flowers to 4 inches across. The flowers open sequentially on
the spike lasting 4 to 6 weeks. The flowers have yellow-brown
petals with a white back, rose lip with a dark throat. Early grow
trials have shown flowering results in containers as small as 5
inches. Larger, more mature plants have multiple flower spikes
producing an incredible display of flowers. Phaius is easy to
grow and adapts well to foliage soil mixes and light levels.
Light - Tolerant of bright light but for best results, crop in 73%
saran or about 2,000 foot candles. Under higher light, plants
may require more fertilization.
Nutrition - In the beginning, use a complete 1 -1 -1 fertilizer.
Best to start with modest levels, i.e., N-60-80ppm, K-60-80ppm and as crop matures, gradually
increase to a maximum of N-120ppm, K-150ppm.
Temperature - Ideal day, 75 to 85 degrees, night 55-65 degrees, however hardy to upper 30's, no
frost. Good in zone 9 and 10 landscapes. Ideal humidity: 70%. High temperatures (90 degrees) may
cause new leaves to be narrow.
Pests - Aphids, thrips and spider mites can be a minimal problem. However, broad mites can create
distortion in newer growth. No known phytotoxicity from common pesticides, but testing under
grower's conditions recommended.
Soil - A well drained media, i.e., Canadian peat, perlite, bark, adjusting pH to 5.5 to 6.2 using a good
horticultural grade of dolomite. Monitor EC to a maximum of 1 to 1.5. Tip: use nursery containers or
standard pots versus azalea types in order to provide more space for a very vigorous root system.
Misc. - Blooms (spikes) appear to be induced by short days. Natural flowering occurs late winter or
early spring depending on your geographic location. Extreme temperatures can affect growth rate and
initiation of spike.
This text is a recommendation only; it is not an endorsement of any products or acceptance of any
liability as result of usage.