I love all these ideas for dry climates, this is another I may employ! I have a feeling we have similar climates, periodic heavy rains and dry dry dry in between. Our snow has been extremely light as well the past few years so it's getting even drier. This is a great way to grow herbs, I'm so stoked to try this.
I lol'd at your comment "can't be trusted to drill holes" I make Andrew drill things cos I'm the same way 💁‍♀️ lucky he loves using power tools.

Resteeming so I remember this exists!

Xx ToL