I seen this on one of your projects it looked very clever
Is this the one you want? Wishing you the best.
You need to contact the poster directly this is a general forum and without more info don't know what project you are referring to. Thanks!
I've grown grass in several planters. It's super easy... just put in the potting soil and seed the top. keep moist and in about a week grass will start to sprout. Here is a post I wrote about one time I used a vintage style scale for the grass.