I never updated the results of that side-by-side defol experiment I did here because too many things went off the rails with that particular flowering cycle, and I figured it wasn't worth posting just to try and explain that. Mostly grower error- some nute burn, some of the good ol' ph issues, and a timer malfunction.
However, due to high demand (ok it wasn't really a demand, but he
was high) I'll proceed anyway with the worthless post about the results, and my questionable impressions.
In the end the defoliated plant did produce more, but like I said there were a lot of other issues involved which rendered the whole experiment useless.
I was attempting to follow AK Greeenlover's method of major defoliation and weaving into a scrog. Removing basically all the big fan leaves, which (I think) is meant to cause a major explosion of small buds from every node, leading to a very full and very even screen. So this is quite a different sort of defoliation than just trimming undergrowth or a few fan leaves that are blocking the light.
My defoliation definitely set the plant back. For a two weeks it pretty much stood still, while the non defol plant carried on growing. It's been pointed out that for this method it's important to do defoliation during veg, to get them 'used to it'. I hadn't done that so maybe the plant was more shocked than it would have been otherwise. Also- conditions weren't perfect and there could have been other reasons for slow growth. But in my case, the major defol did set it back a lot and it was three weeks before it was properly moving again.
It crossed my mind that maybe this method is more suitable for led lighting, which I'm told has less penetration. The defoliated plant, with the limbs woven back into the screen- did produce many more buds, but naturally they were much smaller, and trimming all those little buds wasn't fun. I don't find trimming all that much fun anyway, but this was much less fun than usual. Personally I'd rather have a smaller number of large or medium size buds even if yield was reduced a bit. However, I have no idea whether or not the defoliation
does increase yields. I wouldn't mind trying it again sometime, if I had the right strain. People say that the Kush strains take to it. I'm sure my sativas wouldn't.
As for other forms of defoliation, I do that regularly. All foliage under the scrog screens is removed after about three weeks flowering, and I take some of the undergrowth out during veg as well. I go through and snip off the small lower bud sites. If I don't do it sooner, I'll be doing it later. Towards the end of flowering I pluck leaves fairly often as they yellow and die. In my experience the plant naturally tells me what direction it's going in. By late flowering it seems to need much less foliage and wants to show off its buds.
It's less common for me to remove healthy green fans up top during early- mid flowering, but as long as there are other leaves to carry the load, I do snip some of them when they're covering up likely buds and don't want to bend out of the way.
Alright. Here goes nothing. I have two " Jack Herer" so called- the Greenhouse Seeds co version. I haven't harvested any of this strain yet so probably shouldn't be too cynical about it yet, but I have my doubts somehow. In any case, I'm not overly attached to it, and I have two exactly the same so I'm going to do this drastic defol on one and leave the other.
Here's the before pic. It's at exactly 25 days of flowering and I figure it's mostly done stretching. The scrog screen it's in is 19" by 24
Like I said I have one other one. I could upload the pic but really, it looks exactly like this one, just trust me.
Here it is after the hack.
It ain't pretty. Don't laugh...
I'll update in a week or so if it lives lol.