how do we put the plants in it?
 

We built your 11 plant hydroponic garden, but how do we put the plants in it? We saw the picture with a plastic cup in the bottle, but how does that work? Lathrop Adv. Tech. Class

About the little cups again: So plants go in the little cups and cups go in the 2-liter? And the roots are in the cup, or do they extend out? How big should the holes be? Thanks!

Wash the dirt off the plant roots.
Put a few rocks in the bottom of the solo cup.
Place the plant in the cup and fill it up with rocks.

It's OK for the roots to grow outside of the solo cup but don't let the roots go down the pipes and plug up your garden. If you water the plants often enough the roots don't need to go looking for water. The holes in the solo cup should be small enough to keep the medium from going through.