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Black Orchid Seeds

Black is not a common color found in flowers, but the rare Coelogyne pandurata orchid is worthy of its nickname, black orchid. The orchid is endangered due to overpicking in its native Borneo, but cultivators are attempting to boost the species. The flower is not entirely black, but its lip and markings throughout are a true black. Due to the plant's rarity, seeds are difficult to find and plants are usually sold for high prices.
  1. Seeds

    • Collect black orchid seeds from fully-ripened fruit. They are small, off-white in color and are described as somewhat fluffy. The larger seeds tend to be long and thin. One reason for the rarity of this species is the difficulty of germinating the seeds. In-vitro (lab-based) germination of seeds is difficult but is the most reliable method. It requires incubating the seeds in darkness for a period of five months. Scientists found that the seeds grow fastest in an MS medium. MS is used in laboratories and contains micro and macro elements ideal for plant growth.

    Germination and Growth

    • As black orchids germinate, they enter a number of growth stages. During the first three weeks, the embryo is in the first phase, when it is yellow, and then develops into a green color. Four weeks after sowing, the embryo splits into two sides, with one darker than the other. This contrasting color pattern is present in the developed plant. After five weeks, leaves begin developing, with two leaves present after seven weeks, and three leaves at 11 weeks old.

    Growth Description

    • Once established, the black orchid produces an interesting and unique color and shape. Flower spikes are 2 or more feet long and produce 15 to 25 flowers. The flowers, which may appear twice a year, are light green and exhibit truly black patterns on their lips. The flowers reach 3 to 4 inches long. Blooms occur in spring through fall. New spikes appear and produce flowers quickly, and its large, pleated leaves can reach more than 1 foot in length.

    Care

    • In its native Borneo, the black orchid grows in low-lying, moist rainforests. It is found growing on mossy tree trunks or in leaf litter and moss-covered rocks. Medium light exposure and somewhat warm temperatures are ideal. Nighttime temperatures should not get cooler than 62 F, and daytime temperatures should be at least 70 F or slightly warmer in the summer. High humidity of 50 percent and regular water are necessary. Do not allow the soil to dry out between waterings.