Hi Alaskan1
I think kola320 was referring to the term of monster cropping clones rather than taking veg clones.. Here is some info I found on it.
Monster Cropping (a.k.a. Flowering Clones) is new method of growing that one of our members brought to my attention. Monster Cropping essentially involves taking clones from flowering marijuana plants, and then rooting those clones. They will reenter vegetative state and eventually create super-bushy plants with a large amount of nodes and branches. This method was dubbed “Monster Cropping,” because that’s exactly what you’ll end up with—huge, monster plants.
Flowering plants typically aren’t a source for clones, and most experts will tell you that it goes against most rules of cannabis cultivation. Even so, the science behind Monster Cropping is legitimate, and you will certainly enjoy the results.
Start by taking clones of a marijuana plant that is about 3 weeks (21 days) into the flowering stage. This is usually the ideal time to take the clones, but you can also take clones later on without affecting the results. Lower branches are ideal for cloning because they haven’t become stiff, and they will root faster than something like the top cola. Take the cutting and place it in a glass of water. Let it sit there for some time so that no air finds its way into the vascular system (a problem that can be fatal for the plant). The cut needs to be made along the stem so as to increase the surface area for the uptake of water and/or nutrients (depending on the cloning technique you’re using). In my own experience, a small hydroponic system or a propagation bubbler is easily the best option for cloning marijuana plants.
So in theory by the time you reach harvest you should have rooted clones that have been in veg for 4 weeks and you can then flip to 12/12 to have a continuous 8 week cycle of harvests..
I will probably do a light trim maybe at the 4 week mark just to make sure it's not too clutters and the buds are getting the best light possible