This answer applies to dirt not using SCROG.

For vegging you need less space obviously.

Personally I veg in 5x5 deep square nursery pots.
You can get 20 plants into a space 25x20 inches, plus you should always figure extra room around the sides to take care of them and give them air circulation.

I don't veg for long enough for the plants to get huge, but if you would like to give them more time, expect to give them more space.

To flower, I transplant into 12x12inch square 3 gallon pails. Using these, the plants themselves take up a space 4x5 feet for 20 of them.Again, There's a walkway all the way around for access.

Remember unless you are using clones and feminized seeds you can count on needing a bit less space than that as you will find males.
stinkyattic Reviewed by stinkyattic on . seeds Hey, can anyone tell me what seeds look like after about a week of planting them...i looked and i saw some miscolored looking balls...looked like seeds (they were like a greenish yellow)...but i dont know if i just f.cked up my batch or if they will be ok... please reply fast... Rating: 5