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December 5, is a day to mark because it is the anniversary of the repeal of prohibition in US law. Since that date, every December 5 has been celebrated as Repeal Day. Cannabiphyles have an interest in adopting and promoting Repeal Day as an occasion to make the point that today's cannabis...

What's the best way to measure temperature in a grow? If you put the thermometer in the light, the light's radiance can give you a much higher reading than even the ambient air temp. If you put the thermometer below the leave canopy, the temperature reading is much lower. Measured at the...

As you all know, the idea of scrog is to keep your flowers and vegetation on the same level so that you can maximize the potential of your light source. The problem is that during flowering some buds grow faster than others and so you have to raise your lights to keep from burning the tallest...

Is there any degradation or loss of vigor suffered by a plant produced from successive clonings of the same genetic material? That is, a clone having grown and then cloned, and that clone having grown and been cloned, and so on? Is there a limit on how genetically old a plant can get?

Is it common, during late flowering, for cannabis flowers to slow their upward growth and instead branch out laterally? Is there some way to encourage this? (Because I like it).

Hello All, I have watched a few of these plants grow and here's something I have been wondering about that I hope growers more experienced than I am will comment upon. My speculation is that the most important determinant of flower size and height is the relationship of a particular flower's...

Hello everyone, this is my first post here at rollitup, and I have a very general question to ask; it's not a practical question but rather just something I wonder about. Does anyone know of a reasonable sounding theory of what function THC has in the cannabis plant? What does THC do for...

Hi, call me Quillo. I live in North Carolina, USA. I have some growing experience, though it's not extensive. I do know some useful stuff about HID lights and about electricity in general and I look forward to sharing what I know and learning from others. I'm a fan of hempy buckets, scrog, and...