Cymbidium orchids are a popular choice for greenhouse cultivation, prized for their vibrant blooms and elegant appearance. To ensure your Cymbidium orchids thrive in a greenhouse environment, it’s essential to provide the right temperature, humidity, watering, fertilization, and lighting conditions. This article will guide you through the key considerations for creating an optimal growing environment for your Cymbidium orchids.
Ideal Temperature and Humidity Conditions
Temperature
Maintain a temperature range of 10–24°C (50–75°F) during the day and 10–14°C (50–57°F) at night. Avoid exposing your Cymbidium orchids to temperatures above 30°C (86°F) in the summer or below 35°F (2°C) in the winter, as these extremes can be detrimental to their health.
Humidity
Ensure high humidity, which can be achieved using a humidifier or a humidity tray. Be cautious not to let the plant stand in water, as this can cause root rot.
Watering and Fertilization
Watering
Water Cymbidium orchids regularly, ensuring the growing medium is consistently moist but not waterlogged. Increase watering in the spring and summer to support active growth, and reduce watering in the fall and winter when the plants are dormant.
Fertilization
Fertilize your Cymbidium orchids regularly, using a balanced, water-soluble orchid fertilizer. Dilute the fertilizer to half the recommended strength to avoid burning the roots.
Lighting
Provide bright, indirect light for your Cymbidium orchids. Direct morning or afternoon sun is ideal, but avoid prolonged direct sunlight, which can cause leaf burn and black spotting. In a greenhouse, use shade cloth if necessary to filter the light.
Potting and Repotting
Potting Medium
Use a light, porous medium such as New Zealand Sphagnum Moss or a bark-based mix. This allows for good drainage and aeration of the roots.
Repotting
Repot your Cymbidium orchids every two to three years, or when the potting medium breaks down. Choose a pot that allows for at least two years of growth and remove any dead or dying roots during repotting.
Pest Control and Troubleshooting
Pest Control
Regularly inspect your plants for pests like spider mites. Use insecticidal soap if necessary, and maintain good air circulation to prevent fungal diseases.
Troubleshooting
Monitor your plants for signs of disease or pests, and take prompt action if you notice any issues. Adjust watering, fertilization, and lighting as needed to ensure optimal growth.
Contaminants and Chemicals
Contaminants
Be cautious of contaminants like spider mites, mealybugs, and scale, which can infest your Cymbidium orchids. Regularly inspect your plants and take prompt action if you notice any issues.
Chemicals
Avoid using harsh chemicals, and instead opt for organic or environmentally friendly alternatives for pest control and fertilization.
Additional Tips
Air Circulation
Ensure good air circulation around your Cymbidium orchids to prevent fungal diseases and promote healthy growth.
Pruning
Prune your Cymbidium orchids regularly to maintain their shape and encourage new growth. Remove dead or dying leaves and stems to prevent the spread of disease.
By following these guidelines, you can create an optimal environment for your Cymbidium orchids in a greenhouse, ensuring they thrive and produce beautiful blooms.
References:
– RHS. (n.d.). How to grow cymbidium orchids. Retrieved from https://www.rhs.org.uk/plants/cymbidium-orchids/how-to-grow-cymbidium-orchids
– OrchidWeb. (n.d.). Cymbidium Orchid Care. Retrieved from https://www.orchidweb.com/cymbidium-orchid-care
– The Martha Stewart Blog. (2019, March 28). The Orchids in My Greenhouse. Retrieved from https://www.themarthablog.com/2019/03/the-orchids-in-my-greenhouse.html
– Hydro-Orchids. (n.d.). Plant Care for Cymbidium Orchids. Retrieved from https://www.hydro-orchids.com/pc-cymbidium.html
– Reddit. (2023, January 5). Looking to get this greenhouse for my orchids. I’ve been growing… Retrieved from https://www.reddit.com/r/orchids/comments/1043yqg/looking_to_get_this_greenhouse_for_my_orchids_ive/