I started these little guys in the bottom of a plastic water bottle, it has been about 2 weeks now and I am wondering when it is safe to transplant them to a larger pot? I picked up some 3 gal square pots but don't want to jump the gun on it.
How big are your plants? After 2 weeks they should be good for transplanting, but you could still wait another week or so. If you leave it in that soda-bottle for too long, the plant will stretch. If you give it enough room for the roots, it will be more bushy. This is my experience at least. I go from those small plastic cups to big ass 25 L pots. They love it and start growing faster right away.