I read that it retards bud growth if you give it N during flowering.
I'm just going off of what I've seen in UB's grows. Lots and lots of weed, awesome colors and green leaves. I'll concede that plants need more P during flowering though. I'm no where near experienced to give the whys, I'm just going off of what I've seen. If it isn't too hard to find I'll repost his post about why. I know the thread was pretty large though. Ah here it is:
- Again we are not comfortable with what's going on, think botany and outside of the box. A plant flowers not because of the foods the labels and forum geeks says they should have, it flowers based on the health of the leaves. You're not feeding it anything, the plant is making its own food. Your sole purpose for using plant foods is to support plant processes, salt requirements. Support of leaf health is what's important, not forum paradigms, consensus', etc. I grew an outdoor sativa with high N foods all the way thru. Why? Because every time I used a blossom food (low N) the leaves would yellow, indicating that chlorophyll was being destroyed. Even though they were wispy buds, typical for a pure sativa geno, they were 10" across and very heavy. Here's a shot showing 2 main colas of a total of 4 on one plant.
By the same token you don't want to overdo N during flowering. It's all in the balance.
Originally Posted by squarepush3r 
+rep, thx UncleBen
Uncle Ben, what ratio nutrients do you for your plants? Do you use different formulas for veg and flower? Do you use Lucas formula, 5-10-9?
For me, a 9-3-6 and a 1-3-2 is all I need. I don't believe in the Lucas formula as it is not a complete food, at least not for hydro and I don't think he promoted it for soil use. Just because something is talked up, is popular, doesn't mean it's the best choice.
