The Dendrobium anosmum var. semi-alba is a rare orchid that is especially notable for its delicate play of colors and powerful fragrance. Whereas the common D. anosmum is known for its vibrant purple flowers, this semi-alba variety offers a more subtle, sophisticated palette of white with purple highlights. A special find for any collector or lover of fragrant species.
This species is native to Southeast Asia, including the Philippines, Thailand and Malaysia. It grows there epiphytically on trees in warm-humid lowland forests. The semi-alba variety is a natural color variation that is rarer in occurrence, making it popular among connoisseurs.
The Dendrobium anosmum var. semi-alba develops long, slender reeds (canes) that can grow to more than a meter. During dormancy, the plant often loses its leaves. In spring, large, fragrant flowers appear directly on the bare reeds. The flowers are usually 7 to 10 cm large, white in color with a purple-pink lip and a light purple haze in the center. The fragrance is distinctly sweet, reminiscent of honey with a hint of vanilla.
This species likes lots of light, but does not tolerate bright midday sun. A place in front of an east or west window is ideal.
A warm location (18-30 C) is ideal. In winter it may be slightly cooler at night, to about 14-16 C, to encourage flowering.
Use a well-drained, aerated orchid substrate based on medium-sized tree bark.
A humidity of 60-80% is desirable. Regular spraying helps, especially during warm periods.
During the growth phase (spring and summer), give diluted orchid fertilizer weekly. During the dormant period (fall and winter) do not fertilize.
During the growing period, water regularly, allowing the substrate to dry slightly between waterings. Preferably use demineralized water or clean rainwater. In winter, you may water less and keep the orchid almost dry for several weeks to promote flowering.
Flowering usually occurs in early spring, after the dormant period has passed. Flowers appear directly on the older, leafless canes. Flowering can last up to three weeks, with the fragrance spreading strongly through the room.
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