You want to leave them in those pots. They are fine there. Too big too soon and you will stunt the growth of the plant. You could have started them with less soil / smaller pots. It is hard to gauge the size of those things but I'm guessing you can leave them in those until they are at least 6 - 8". Otherwise the plant will focus all energy on growing roots below ground. Just be sure that those cups have holes in the bottom for drainage.

Check your Ph first. They look a little young for nutes at this point.
bigsby Reviewed by bigsby on . Any idea's here on why, timing isnt on my side Well these are well over 3 weeks old. I have them in Organtic MG soil, which i started them all in peat cups before putting them in these 32oz cups. My temps are 86 high and 68 degrees lows. The humidity is high 68 and low is at 48. I thought they were cold so i tried the blanket around them to try an cover the outside of the cups and try an keep them warmer. Dumb maybe but i need them to get up so im trying anything. Plus it keeps the light off the sides of the cups, as i know roots an light Rating: 5