Best numbers for fertilizing blooming/producing plants?

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My plants are either making flower buds, blooming, or have pods on them. I haven't given them much fertilizer at all this season and want to give them some nutrients because they've been getting much bigger lately. I have 18-18-21, 15-30-15, and a bag of bonemeal.  What amount of which would be the best for them? Thanks.
 
i use the 18-18-21 at this stage, and my plants grew 2 times the size and now have flowers and pods.
use as directed on the box/package and all should be fine 
 
You should follow the directions on the package. Although a bit less than directed would be better than over fertilizing. And in general, it is said that a high P (middle number) is more helpful to fruiting plants. However keep in mind that just because you provide it, doesn't mean they will use it.
 
magicpepper said:
i use the 18-18-21 at this stage, and my plants grew 2 times the size and now have flowers and pods.
use as directed on the box/package and all should be fine 
Click to expand...
Box says one tbl spoon per gallon, is that how you've used it?
 
i have a 2 gallon watering can that i put 1.5 tablespoons in and thats how i do it. 
 
edit, the link Aaronriot posted is pretty good info as well
 
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