Usually the plastic pots you get at the garden centre come in black, green or brown. Sometimes you get them in jazzy yellow, pink and blue. What they all have in common is they block out light to the roots of plants.
Now I've loads of plastic food containers (yoghurt, cottage cheese and the like) which I'd like to use to pot on seedlings. Some are clear and some let a little light in.
My question is will this help or hinder plant growth? Or will it make no difference? (This is what I think as the soil blocks light to the roots, which when they grow through the bottom of the pot it's time to transplant or pot on anyway.)