Tips for Choosing the Best Greenhouse Lighting
Posted on Friday, March 13th, 2009 at 9:56 amIf you’re just starting out with a greenhouse, it’s important that you make the right choices in lighting. Proper lighting is crucial in order for a plant to flourish. Proper lighting will go a long way towards making sure that your plants thrive. 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. Tall plants, fruit and flowers need more light than other plants. An outdoor greenhouse will typically use 25 watts per square foot. However, indoor greenhouses require at least twice as much light.
2. The type of light you choose must be appropriate for the kind of plants you’re raising. Something that impacts plant growth to a great extent is the kind of light waves that are given off. For instance, if you want optimal growth for fruit or flowers, use high pressure sodium lights. The light from these lamps is in the red spectrum, and stimulates the plants’ growth hormones. Metal halide lights utilize the blue spectrum and are best suited to leafy plants.
3. The lighting system shouldn’t be too hot for your plants to handle. Too much heat can kill them. Some lights release a lot of heat when they’re running. Incandescent lights, for example, produce large quantities of heat. They’re not a great option anyway, because the light they give off isn’t enough for most plants to thrive. However, fluorescent grow lights give off a lot less heat. Make sure you compare how much heat each lighting option produces before making your purchase.
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. Unfortunately, they’re also the most expensive to purchase. LCD grow lamps are rapidly gaining in popularity because of their energy efficiency. They also produce lower levels of heat.
No matter what kind of indoor greenhouse lighting you decide on, it’s essential that you turn it off from time to time. Lighting should only be used where and when it is needed. Plants need darkness, too, in order to grow properly. Leave the lights off for 6 to 12 hours each day in your garden greenhouse, depending on what kind of plants you have.
