How To Fix Curling Marijuana Leaves?
In order to stop your cannabis from curving up or down, you need to address whichever issue is responsible (overwatering vs. under-fertilizing).
If there are leaves curling up at their tips and yellowing between the veins, the plants are probably not getting enough nitrogen. In this case, you might need to add some organic fertilizer for cannabis nitrogen deficiency.
If they tend to curl up from the stem and have brown tips, it’s probably over-watering that is causing the problem. If this happens all you need to do is stop watering for a couple of days until the plant recovers.
How much water your cannabis needs changes depending on its size, light exposure, humidity levels, and growing medium. While there are no hard-and-fast rules about how much water you should give your plants per day if they are wilting from over-watering at any point during their life cycle you need to cut back on the amount of water given every day until they stop wilting altogether.
If your cannabis is curling down, however, you may have under-watered it. How can you tell? If your plants are drooping more than usual and they don’t perk up when watered but instead stay even worse after watering then this could be a sign of an over-drafted plant. How can you fix this? Stop watering for a couple of days and give it some time to recover
