How to make a miniature chalk wild flower meadow
I've just been watching a video on the BBC springwatch Facebook page about making a miniature wildflower meadow out of a plastic storage box. Now I have a load of scrap timber which I can make containers out of and I was going to do the same. My first thought was a bit of chalk grass wildflower meadow but I'm wondering how to go out about creating it. Where can I get lumps of chalk from in a very small quantity and how best to construct it...ie layer of crushed chalk and then a thin layer of soil or compost on top.
Any advice most welcome