This is a common occurrence that many Cannabis farmers will come across at one point or the other, and it is for this reason that it is important to understand what leads to curling of the leaves. In some cases, only a few select plants exhibit the phenomenon where the leaves curl inwards. For instance, you could have only 3 plants out of 20 with the said problem. What are some of the things that you should be on the lookout for in such a scenario? Is humidity to blame? What about the amount of ...