What To Look for in Lights For Your Greenhouse
Saturday, May 2nd, 2009When you’re setting up your new greenhouse, don’t forget to pay attention to the kind of light you’ll be using. Lighting is a critical factor in a plant’s development. Choosing the right kind of light will ensure that your plants grow quickly and remain healthy. If you need some help figuring out your best options in greenhouse lighting, here are some tips that will help you make the right choice.
1. The first thing you need to do is figure out the amount of light you will require. The factors you need to consider are the type of plants you’re going to raise, and the size of your greenhouse. Some plants such as flowers and fruit, as well as those that are taller, require more light than others. Outdoor greenhouses generally require 25 watts for each square foot. But an indoor greenhouse will need twice as much light or more.
2. The type of light you choose must be appropriate for the kind of plants you’re raising. The type of light waves produced has a significant effect on plant growth. High pressure sodium lights, for example, are the best if you’re growing flowers and fruit. These give off red light waves which are beneficial for encouraging growth hormones in plants. If you’re growing leafy plants, they’ll thrive under the blue spectrum, which metal halide lighting is best at providing.
3. Don’t let your lighting overheat your plants. Too much heat can kill them. Some lights release a lot of heat when they’re running. For instance, incandescent lighting gives off a lot of heat. They’re not a great option anyway, because the light they give off isn’t enough for most plants to thrive. Fluorescent grow lights, on the other hand, produce much less heat. Before you buy, take some time to figure out the amount of heat that each style of lighting will give off.
4. Choose lighting products that will give you the results you need without using a lot of energy to power them. The most energy efficient greenhouse lights you can buy are known as high intensity discharge. However, they also cost the most money to buy. Another option is LCD grow lamps, which are a popular choice due to their high energy efficiency. They also produce lower levels of heat.
Regardless of the type of greenhouse lighting you choose, it’s important that it not be left on all the time. Lighting should only be used where and when it is needed. Plants need darkness, too, in order to grow properly. Depending on the type of plants you’re growing, you should have the lights turned off in your garden greenhouse for anywhere from six to twelve hours daily.














