Posted 29 January 2012 - 01:26 PM
I don't trim anything that's still alive. If your pot is big enough, and you only have 1-4 main stems, your top colas will reach maximum capacity anyway. Bottom material is great for making hash and edibles.
lollipopping is useful in scrog and when your plant has a shitload of main stems that would normally produce popcorn if not lollipopped. For example, I flowered a mother that had about 2 dozen colas growing in a 3 gal pot. (kind of like the one in that video) She produced nothing but popcorn buds, no solid colas at all. If I had lollipopped her, I would've directed a lot of energy and nutrients to the top for some nice buds.
On the other hand, I normally grow shorter plants with 2-4 main colas and they get as fat as they possibly can. (lower, popcorn buds get as heavy as fishing weights, check out my blogs) If the plant's needs are being met and you only have a few main colas, then lollipopping will reduce your yield because the plant will have more resources than it can use. If you have a lot of main stems that are straining the plant's resources, then lollipopping will direct energy towards the top, helping to form solid colas. This is my understanding based on my experience, and a lot of factors can change the outcome, like a 20 gal pot, type of pot, healthier root growth, hydro, etc.
As for trimming, I water my plants every 3 days and when I do this, I take them out, put them on a table, and remove all brown material. Anything that's still alive is providing resources to the plant (energy, nutrients), not the other way around. Yellowing leaves are providing for the plant, not taking away from it. If healthy growth is shading a fat bud, then I'll tuck the leaf to the side.
hope this helps...