Does anyone know anything about gardening?

Not gardening, but I like this idea a lot:

https://www.theguardian.com/environment/2020/may/01/not-just-weeds-how-rebel-botanists-are-using-graffiti-to-name-forgotten-flora-aoe

What I didn't know:

In the UK it is illegal to chalk anything – hopscotch, art or botanical names – on paths or highways without permission, even if it educates, celebrates and fosters interest and knowledge in nature.

This looks like a law ripe for revision ... not that there aren't more important things to be getting on with, and obviously it could just be ignored instead.

I imagine the law would originally have been aimed at sloganeers of certain political persuasions.