Light burn or light bleaching is a serious problem if you’ve got a got a room full of cannabis plants. Light serves as food for the plants, but it can also be an issue if it goes overboard. Think of it this way – humans need food for energy, but what happens if you eat too much? Yep, you’ll have several problems from obesity to diabetes.
Prevention is far better than cure, they say. Thus, you must try to prevent light burn rather than trying to cure it. First off, light burn depends on the type of light you’re using. For instance, a CFL hung even 10 inches away from the plant will not damage the plant. The same applies to fluorescent or T5 lights because they aren’t that powerful and don’t emit a lot of heat. However, HID and LED lights positioned even 10 inches away from the plants can kill them.
ight burn is nothing but light bleaching. You’ll notice that the leaves too close to the light turn white or look bleached. Plants growing outside cannot suffer from light burn because the sun is too far away from the earth to burn the plants. Cannabis has evolved for centuries and has adjusted to the sunlight enough to not get burnt.
Leaves turning brown and crisp is an indication of light burn too. It’s a combination of heat and too much light that fries the leaves and render them useless to the plant.
Similarly, cannabis plants use light as food, but if you install too many lights and hang them too close to the plants, you’re asking for trouble. If you notice your plants struggling, keep reading to figure out how to prevent and treat cannabis light burn.
What is a light burn?
Secondly, determine the wattage of the lighting you’re using. For example, a 50W LED light may not be too harmful, but a 1000W LED will have disastrous consequences if you place it too close to the plants. HID lights are too powerful even if the wattage is low. Another problem is that they emit way too much heat that can be unbearable to the plants.
How to prevent light burn?
Yellow leaves can also indicate light burn at times. But, do not get confused between nitrogen deficiency and light burn because they look the same. With nitrogen deficiency, though, yellowing of the leaves start from the bottom and move towards the top. Also, the leaves are limp and fall off from the plant without any effort. On the other hand, if they are suffering from light burn, the leaves feel crispy and are harder to pluck from the plant.
Light burn or light bleaching is a serious problem if you’ve got a got a room full of cannabis plants. Light serves as food for the plants, but it can als