Yellowing from bottom up.. Root bound??

hey guys..

So I have 6 outdoor plants in 11-12 gallon planters. Everything was going great (other than some won't flower!), but then all of a sudden they started getting yellow from bottom up, rapidly. They've been in these pots for some time now, and I'm afraid they are pretty well root bound.. Can that cause the yellowing? If so, am I doomed without going to larger pot? Or is this more likely a nute/ph issue? Or something else? Any help you guys can give is appreciated!!

Pic of one

Nutrient deficency or water? U using tap and if u are whats the ph.

Hey there, thanks for the prompt reply. I am using tap.. Starts high 7's, and about 6.3-6.5 is what it is when feeding - but I haven't adjusted when I just water (hadn't had problems at all until now, just in past week or so). Usually light feed every other watering, which is what I've done all along. I guess I should be paying closer attention to the Ph each time?

Yeah and are they budding? Are you using miracle gro? Im just brainstorming

I've wondered if they need a boost of grow nutes, also? Switched to bloom a few weeks ago.. Simply not enough N maybe?

2 are budding well, the other 4 are being assholes - I had a mixed up light regime in veg, confused then I think. Using ff grow big for veg, tiger bloom now, and big bloom with some of the watering a in between. Thanks for the input man, much appreciated.

My baby

Your welcome mines only been budding for a week but i stop the mir gro when she shows sex. Doesnt work the same then. Nut thing may do it and watch the ph. Best of luck friend

I think I'll do that! I don't think mine will have time to finish now, I'm way northeast. Try and get what I can though.

Much appreciated man.. And good luck to you!

Your plant is looking good!! Looks nice and healthy, good work and good luck with it!! (Missed that post )