Plants of Home and Garden, Orchids
Good light essential, but protect from scorching sun; miniature cultivars best for higher temperatures. Indoor conditions are often too dark, though may be moved indoors while temperatures drop below freezing. Grow in medium-grade fir bark mixed with peat and/or perlite
Tolerates varying temperatures, though day temperatures of 75-80F/ 24-27C, night temperatures of 50-55F/10-12C are ideal; some cultivars readily accept less diurnal variance in temperature. Decrease day temperatures somewhat in winter. Water regularly, especially in warm weather, and less so in cool or wet weather. Keep humidity at 40 to 60% in winter
Fertilize with a diluted 30-10-10 every two weeks during growing season; 20-20-20 during remainder of year. Repot every 2-3 years, when the potting medium decomposes, immediately after flowering. May be divided at this time, each division with 3 to 4 bulbs with leaves. Brown, leafless bulbs or backbulbs may be removed, have roots trimmed off; bury halfway in growing medium, keep moist and in good indirect light. Repot when the new growth has reached 6-8"
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