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PHAIUS TANKERVILLIAE (GRANDIFOLIUS) 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.
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. |
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Temperature -
Ideal day, 75 to 85oF, night 55-65oF, however hardy to upper 30's, no frost. Good in zone
9 and 10 landscapes. Ideal humidity: 70%. High temperatures (90oF+) may cause new leaves
to be narrow.
Temperature -
Ideal day, 75 to 85oF, night 55-65oF, however hardy to upper 30's, no frost. Good in zone
9 and 10 landscapes. Ideal humidity: 70%. High temperatures (90oF+) may cause new leaves
to be narrow.