When should i transplant to bigger pots?

This is my first low budget indoor grow, its just a trial. When should i transplant my plants to bigger pots?

u can go 2-4 weeks in red cups then i go to 3 or 5 gal pots

I usually go from the Solo cups to 21-25 days, then to a 1 gal., then when that gets full, I finish in a 5 gal.

you can go from start to finish in those cups if you want. There is no "should" transplant, just "can".er root systems, but it's not necessary if your situation dictates so.

Generally when the foliage extends to or just beyond the lip of the pot it will have a good root mass to transplant.

AimAim said:

Generally when the foliage extends to or just beyond the lip of the pot it will have a good root mass to transplant.

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I always just worked along the premise of what you see above ground, you will find underground.

tip top toker said:

I always just worked along the premise of what you see above ground, you will find underground.

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I think that's generally a safe statement. But the first couple weeks after germinating there's a lot more developing underground than above IMO.

AimAim said:

I think that's generally a safe statement. But the first couple weeks after germinating there's a lot more developing underground than above IMO.

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I'm not sure what i think on this one. I frequently took a youngun grown in soil, to move to hydro, and upon very carefully washing off the roots in the bath, the above ground growth always hugely surpassed what i found in the soil. Who knows. It would often be a 6 inch plant with a 2 inch root ball. Yet at the same time, i've had a 4 inch plant in a pot twice the size of a solo and found roots at the drainage holes. so yeah, i really don't know where i stand on that statment. Am i allowed to argue both sides?

the easiest way to determine when your plants need to be moved into bigger pots is to tip the cup over and let the plant slide out and into your hands. look at the roots. is the pot root bound? are the roots circling around the bottom? If so its time to move them into a bigger pot. don't be afraid of pruning some of the root mass. or just loosing them up a little.