Hey, are they auto's or photo period? Plastic pots are easier to transplant as roots tend to grow though fabric pots or at the very least cling to them. There are some that have Velcro so you can open them to get plants out easier. How much space do you have for your plants? If growing autos I would say pot up to a 5 gallon fabric pot and leave them. If growing photo period I would get some 3 gallon plastic pots and when the roots fill out move them up to a 5 gallon fabric pot as a final home. You can grow a tree in a 5 gallon pot so I don't see the need for bigger but that's just me. This was in a 5 gallon fabric pot and only 1 plant.
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