Hanging Plastic Bottle Garden

I came across an article and great idea which I have to share with you. Basically they have used old plastic bottles and created a hanging garden. What a fantastic idea.

Hanging garden made from old plastic bottles

Well actually I am in two minds about it.  I absolutely love the idea of recycling and using dead space to create something like this BUT the bottles will obviously contain BPA and as they are in direct sunlight they will be heated. I would imagine that BPA would leach into the soil and hence the plants that are growing in them.   It would be such a great school project but I am torn by the possibility of BPA exposure.

What are your thoughts on this?

Amanda
Green Me OZ
b. http://greenmeoz.blogspot.com/