Common Problems That Prevent Moth Orchids From Growing

The name "orchid" represents a family of around 28,000 flowering plant species that have been around since the time of the dinosaurs. These exquisite plants can be found growing wild nearly all over the globe and even in people's homes. While certain varieties of orchids make the easiest houseplants, some plant aficionados might be intimidated by their seemingly delicate nature. However, a hardy species you might find in the grocery store that also happens to be one of the best for people with allergies is the moth orchid (Phalaenopsis). These flowers can easily adapt to a home environment. That said, they do take some work since there are common problems that can prevent moth orchids from growing. Those include improper lighting, humidity, or water, and placing your moth orchid in the wrong pot or spot in your home. Lack of adequate fertilization can also be a contributing problem. 

How you water and what pot you use can greatly impact growth.  To successfully care for your indoor orchid, house your flower in a pot that drains well, preferably a clear one. This choice allows the orchid's roots to use photosynthesis, supporting the plant and helping it grow and flower. To water it properly, make sure the liquid is at room temperature and give your moth orchid a drink in the morning. You want to provide moisture without soaking the roots, so use caution. Check about once a week or so to see if the roots are dry and in need of water. 

Without the right lighting, your moth orchid won't thrive and could even die. These flowers love bright but indirect sun. If you have your orchid in direct sunlight, it could burn the leaves. On the other hand, orchids that are not getting enough light will have dark green leaves. Relocating your moth orchid to a place near a window that brings in morning light could solve your moth orchid's growth problem. Having trouble finding a place in your home with proper lighting? You could give your orchid artificial light instead. Aim for grow lights in the 10,750-21,500 lumens range.

Keep an eye on the temperature in your house as well. PennState Extension suggests keeping your orchid's environment around 65 degrees Fahrenheit in the winter and about 75 degrees Fahrenheit in the summer. Luckily, these temperatures match the climate most people keep in their homes. Humidity is a different story. Since moth orchids grow in tropical climates, low humidity can affect growth. These plants prefer levels around 50% to 70%, which is typically above what humans are willing to endure inside. To provide your orchid with the conditions it needs without affecting your comfort, you can use a humidifier or a pebble tray filled with water nearby. 

Finally, don't forget to feed your orchid to ensure proper growth. Assuming you've addressed all other possibilities and your moth orchid still isn't growing properly, a lack of or the wrong fertilizer could be the culprit. Give your moth orchid a balanced 20-20-20 fertilizer at just a quarter strength bimonthly during its growing season, reducing that frequency to once a month in the winter.