New England grow. Help needed! 10-10-10??

What's good, I haven't posted anything on here in awhile. This time I need a little help since last years grow I didn't get nearly as much as I was expecting, most likely because I wasn't using any nutes or fertilizers. This year I'm going all out with 20-25 after males hopefully 10-12. Using dank regular bag seeds in compost/aged manure,20% perlite, and just regular potting soil.


Problem is yesterday I found a bag of 10-10-10 all purpose and didn't know how to use it. So I just took a small tablespoon of it and mixed it up in a gallon and watered all my 2-4 week seedlings around 8in- 1 foot tall. My question is this going to burn my roots or something?? And how do you apply 10-10-10 to your already potted plants?

Oh my climate is Northeast coast so fairly short season but really warm. Hi 85-90 low 60-65. I always feel like my plants don't grow as fast as everyone on this forum haha I started nice and early this year, April 20th actually on a few of them. Just need some advice on how to use this 10-10-10 to grow giant crazy tall ganja plants.

Thanks in advance.

Here's a pic of my biggest one probably two weeks ago. Popped out of soil on April 20th. Fell over and topped itself doin really good now. Just not that big http://pbckt.com/pT.Mq

Brand ? Or pic of the all purpose will help

10-10-10 I would use 1/4 tablespoon per gallon and half that for young seedlings. You used too much and that's why your plants dont grow as fast. Hard to get growth when your roots are burning.

From Massachusetts coast myself, just flush that stuff out with water and buy some
water soluble fertilizer. That stuff is probably starter fertilizer for lawns. It does melt
when you put it in water but it's too hot that way. That stuff is made to go on the ground
and as you water your lawn it leeches into the soil over a week or so. My plants are
slow right now so don't worry, they will catch up fast.