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Effects of light pollution on plants

Every grower has their own methods. Some prefer to set up their indoor grow tent with everything needed for great results. Others dedicate part of their garden to create a true feast. Then, there are those with limited time and a beautifully organized terrace or patio. However, light pollution can be a problem for plants.

For the latter group, growing is almost like watching a daily documentary: you get up, look out at your terrace to see how your little friend is developing. Also, you spend as much time as you can providing good fertilizer, necessary watering, and moving the pot around the terrace to get the most light. Anyone who has grown on a terrace knows what we mean.

However, there is a significant issue with outdoor growing on terraces or patios: those pesky streetlights. During the flowering phase, plants grown from feminized seeds require 12 hours of light and 12 hours of darkness ; this ensures perfect development without flaws. But in cities or towns, streetlights, shop signs, or other lighting can pose a serious problem known as light pollution.

Light pollution

How to tell if your plant is affected by nighttime light

After waiting for a period, which may vary depending on the type of plant you are growing, you will move to the flowering phase. There are differences between indicas and sativas; if you have an indica, it will take less time than a sativa. Morover, this phase will determine your harvest’s outcome: if you have maintained the proper feeding schedule and provided the needed light and darkness, your harvest will be excellent.

But, what if there’s an issue? Here, we’ll discuss lighting. Growing outdoors makes it trickier to maintain the right light hours. External factors can affect your plants’ proper lighting. You can detect if there’s a problem by observing closely.

If you notice your plants have entered the final growth stage, pay special attention. The steady growth of buds is the first alert. If buds are not growing and flowers begin to stretch out, it’s a sign they’re not resting enough. Another factor is when buds stop growing while pistils turn brown. This oxidation process is a direct result of nighttime light pollution affecting the plants.

Light pollution

Methods to prevent light pollution for outdoor plants

Although it may seem complicated, this problem can be resolved. You will need to invest time and effort to save your harvest. The goal is to help your plants develop great buds while protecting them from streetlights and other external factors.

If you can’t move the plants off the terrace, it’s best to get a box or something similar and a couple of blankets. The idea is to create a kind of cover to protect the plant from light during the night. Remember to leave one side exposed (facing inside the box) so the plant can breathe properly. With a bit of tape or duct tape, you can set it up and cover your plants at night.

Alternatively, if the pots are manageable, you can move your crop inside the house. Avoid placing them in your bedroom since plants absorb oxygen at night. Find a well-ventilated room and keep them in the dark. Finally, set an alarm to move them back to the terrace when the sun rises. This way, you’ll make the most of every hour of light, and your plants will grow healthy and strong.

By following these simple steps, you can continue growing your cannabis successfully during the flowering phase. If following these recommendations is not possible due to time or space constraints, consider getting autoflowering cannabis seeds. These plants do not depend on light cycles and can thrive with 20/22 hours of light. This way, you’ll get high-quality buds without light-related constraints.

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Erik Collado Vidal

Con más de 10 años de experiencia en la industria del cannabis, sus experiencias y aprendizaje son la base del éxito de GB The Green Brand.

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