I have used 2 liter plastic bottles, juice bottles, and even water bottles with the tops cut off. They take up a lot of storage space because they don't stack well and they are smashed easily. And they are so lightweight that the wind easily blows them around. Even with soil and plants in them, they are knocked over. I could put rocks in the bottom, but I need my thick layer of rocks to keep the weeds at a manageable level.
I think the weight of these would allow me to stack them outside and not worry they will be blown all over the yard. We aren't allowed to have sheds, or anything that looks like a shed, but I hope to get the owner to change his mind about that so I can get a greenhouse. And I'd think I wouldn't have to store them in a container or plastic tub because, well, it won't matter that they get dirty.
I think it will add a nice touch to give away plants that are growing in a real container that can be re-used over and over. Using plastic bottles keeps them out of the landfills, but I don't care too much for them when giving them away. Although the plants in plastic bottles were very light weight enough to be easy to carry around the neighborhood when I was giving the last ones away.
But, I think I will definitely use some of the 2 liter soda bottles and juice bottles to drape over, now that you reminded me that I have a box of them to use.
