A Guide to Growing Sarcochilus Orchids: Beauty in Simplicity
Sarcochilus orchids, also known as saprophytic or mycoheterotrophic orchids, are a fascinating group of plants that have evolved a unique way of obtaining nutrients. Unlike most orchids, which are autotrophic and photosynthesize to produce their own food, sarcochilus orchids rely on a symbiotic relationship with mycorrhizal fungi to thrive. This intriguing adaptation has resulted in a stunning array of orchids that are both beautiful and unique. In this article, we will explore the basics of growing sarcochilus orchids, providing you with the essential knowledge to cultivate these captivating plants in your own garden or indoor space.
Understanding Sarcochilus Orchids
Sarcochilus orchids belong to a subset of epiphytic orchids. They grow 
attached to trees, rocks, or other substrates, and their survival is dependent on specific mycorrhizal fungi in the soil. These fungi form a symbiotic relationship with the orchids, facilitating nutrient exchange, particularly carbon and minerals, from the host tree to the orchid. In return, the orchids provide the fungi with sugars and other organic compounds.
Unlike their photosynthetic counterparts, sarcochilus orchids lack chlorophyll, the green pigment necessary for photosynthesis. As a result, they cannot produce their own food through photosynthesis. Instead, they rely on the mycorrhizal fungi to extract nutrients from decaying organic matter in the soil or from the host tree they are attached to.
Cultivation Tips for Sarcochilus Orchids
Growing sarcochilus orchids can be a rewarding experience, though it requires a slightly different approach than caring for traditional autotrophic orchids. Below are some essential cultivation tips to help you successfully grow these unique orchids:
Selecting the Right Orchid Species: Sarcochilus orchids come in various species, each with specific environmental requirements. Some common examples include Gastrodia, Corybas, and Nervilia. Research the specific needs of the orchid species you intend to grow, as this will greatly influence its success.
Mimic Natural Conditions: Understanding the natural habitat of your chosen sarcochilus orchid species is crucial. These orchids typically grow in shaded and humid environments, often in the understory of forests. Replicating these conditions in your growing area is essential for their health and well-being.
Potting Mix and Substrate: Due to their saprophytic nature, sarcochilus orchids require a specific type of potting mix. A mixture of well-draining, organic material, such as tree bark or coconut husk chips, is recommended. Avoid using soil, as it can retain excess moisture and cause root rot.
Light: While sarcochilus orchids thrive in shaded environments, they still require some indirect light to grow and flower. Filtered or dappled light is ideal for most species, as direct sunlight can be too intense and damage their delicate tissues.
Watering: Proper watering is essential for the health of any orchid, but it becomes even more critical for sarcochilus orchids. Avoid overwatering, as excess moisture can suffocate the delicate roots. Instead, allow the potting mix to dry slightly between waterings.
Fertilization: Sarcochilus orchids obtain nutrients from their mycorrhizal fungi, and they do not require regular fertilization. In fact, applying fertilizers to these orchids can be detrimental. If you suspect a nutrient deficiency, seek advice from experienced orchid growers.
Temperature and Humidity: Sarcochilus orchids generally prefer temperatures that range between 60°F to 75°F (15°C to 24°C). Additionally, maintaining higher humidity levels (around 60-70%) is crucial for their well-being.
Growing sarcochilus orchids can be a challenging yet gratifying endeavor for orchid enthusiasts. Their unique adaptation to a symbiotic relationship with mycorrhizal fungi sets them apart from other orchid varieties, making them a captivating addition to any collection. By understanding their specific requirements and mimicking their natural habitat, you can create an environment in which these remarkable orchids will flourish and reveal their natural beauty. So, take the plunge into the world of sarcochilus orchids and discover the magic they bring to your gardening experience.
Have a great week growing your orchids,
Peter Johnson
Orchids In Print