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    9 Things You Probably Didn’t Know About Orchids

    By: Linnea Harris
    Updated: March 3, 2023
    Edited by Chris McDermott
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    Blue and purple orchids in the Netherlands
    Blue and purple orchids in the Netherlands. Gleti / iStock / Getty Images Plus
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    If you’ve ever cared for an orchid, you know that they’re pretty special. From their practically microscopic seeds, to their tasty seed pods, to their worldwide range, these flowering beauties are nothing short of amazing. Here are a few things you probably didn’t know about them. 

    1. They Are the Largest Family of Flowering Plants 

    Varieties of orchid flowers at Jeff Leatham’s ‘Kaleidoscope’ orchid exhibition at the New York Botanical Garden’s Enid A. Haupt Conservatory in New York City on March 16, 2022. ANGELA WEISS / AFP via Getty Images

    By some estimates, Orchidacea is the largest family of flowering plants, with at least 25,000 to 30,000 species — not including the 100,000 hybrids and cultivars created by horticulturalists that aren’t naturally occurring. Of all flowering plant species on Earth, orchids make up about 10%. 

    2. Vanilla Comes From Orchids

    Dried vanilla sticks and a vanilla orchid flower in the Ukraine. ValentynVolkov / iStock / Getty Images Plus

    The next time you’re enjoying a vanilla-flavored dessert, you can thank an orchid. Vanilla beans are actually seed pods from orchids in the genus Vanilla, which includes Vanilla planifolia (or Flat-Leaved Vanilla) and V. x tahitensis (a hybrid). These vanilla-producing orchids can only grow 10 to 20 degrees north and south of the equator. Originally from Mexico and Guatemala, they’re now grown all over; about 75% of vanilla on the market now is grown in Madagascar and Réunion. The pods are picked before they’re ripe, submerged in hot water, then dried out for several months. Given the complex growing process, vanilla is one of the most expensive spices in the world. 

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    3. They Grow in Many Different Sizes

    You’re likely familiar with the typical houseplant-sized orchid, but they can grow much, much larger. The flowers alone can weigh several hundred pounds, or grow no larger than a dime. Sobralia altissima, for one, can be found growing up to 44 feet tall in Peru. The tiger orchid — or Grammatophyllum speciosum — is the largest type of orchid, with the biggest known weighing in at about 4,000 pounds (and their flower stalks can grow up to six feet long). Catch a glimpse of one in bloom at the Brooklyn Botanic Garden, or, if you’re one of the lucky few to find one in the wild, they also grow in the jungles of southeast Asia. 

    A small wild orchid in Costa Rica. Kevin Schafer / The Image Bank / Getty Images

    At the other end of the spectrum are orchids with blooms only 1 cm across, which grow in humid “cloud forests.” The Campylocentrum insulare in Brazil is only 0.5 mm across, and was thought to be fungus until examined under a microscope. 

    4. They Trick Insects Into Pollinating Them 

    While orchids have both “male” (stamens) and “female” (pistils) organs in each flower, they don’t pollinate themselves, but rely on other insects to do so. That’s where the trickery comes in. The reproductive parts of many orchid species mimic the color and shape of certain insects — specifically, those that they need for help with pollination. These reproductive parts of the Oncidium henekenii, for example, look like a female bee. When a male bee comes looking for a mate, it’ll come into contact with pollen, then fly off to distribute it to other orchids. Slipper orchids do something similar; their large, cavernous labellum traps insects that come in looking for nectar, and must then escape through a hole that coats them in pollen. 

    A slipper orchid in Lancashire, UK. Dave Moorhouse / Moment Open / Getty Images

    5. Hundreds of New Species Are Discovered Every Year

    Adding to their already huge repertoire are the 200 to 300 species of orchids discovered every year. They’re mostly discovered in the tropics — where the majority of orchids grow — often, sadly, while their ecosystems are being plundered. Because the plant needs to be flowering to identify it as a new species, it’s often very difficult to identify new orchids in the field. 

    An orchid species of the genus Masdevallia in the wild near the ancient Inca city of Machu Picchu, Peru in the Andes at an altitude of 7,970 feet. Artur Widak / NurPhoto via Getty Images

    6.  Orchid Hunting Was Once Fiercely Competitive 

    Maybe it’s something about their perfect bilateral symmetry, but in the Victorian era, orchid hunting was a fiercely competitive activity. So-called “orchidelirium” drove personal collectors and hired hunters to pillage orchids for their private collections, risking tropical diseases, dangerous wildlife, and unfamiliar and dangerous terrain for these flowers; some hunters were even killed in the process. The wealthy and elite would pay thousands for single orchids. Times have since changed, and orchids are now covered by an international treaty called the Convention on International Trade in Endangered Species (CITES), which makes it illegal to transport wild-grown orchids. 

    7. They Have Many Traditional and Medicinal Uses 

    A Dendrobium orchid and essential oil derived from the flower in Thailand. Everyday better to do everything you love / iStock / Getty Images Plus

    The cultural tradition of using orchids medicinally spans parts of Southeast Asia, China, Japan, Europe, and Africa. Orchids — especially in the genus Dendrobium — have been used in Chinese herbal remedies since 2800 to boost the immune system and prevent ailments like cancer, hypertension, and stroke, among many other uses. 

    8. They Grow on All Continents Except Antarctica 

    Wild orchids in Siberia, Russia. Alexander Nikitin / Moment / Getty Images

    While they mostly grow in the tropics, orchids are found all over the world (except icy Antarctica). Colombia boasts the greatest variety of species, with 4,270 different orchids growing within its borders. In North America, 200 different species can be found — including in Alaska, which has 33 of its own native species. 

    9. They Have the Smallest Seeds in the World 

    Tiny white seeds blow in the wind from a crucifix orchid seed pod in Australia. Pleio / iStock / Getty Images Plus

    There are, quite literally, no seeds smaller than an orchid’s. A typical orchid seed is about the same size as a speck of dust, but they range in diameter greatly. The seeds of Anoectochilus imitans measure just 0.05 mm in length, and the lopsided star orchid (Epidendrum secundum) are 6 mm, making them the largest of all orchid seeds. Although small, most orchids produce huge amounts of seeds — millions, in fact. 

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      Linnea Harris

      Linnea graduated from Skidmore College in 2019 with a Bachelor’s degree in English and Environmental Studies, and now lives in Brooklyn, New York. Along with her most recent position at Hunger Free America, she has interned with the Sierra Club in Washington, DC., Saratoga Living Magazine, and Philadelphia’s NPR Member Station, WHYY.
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