I have a bag of this for my hams -
https://www.viovet.co.uk/Vitakraft_V...d_Rose/c31638/
It's very soft & green and smells wonderful! I'm not sure if the hams actually eat any of it, but they like sniffing around it in and Rupert sometimes adds a little bit to his bed. I just think it's a nice natural enrichment thing for them.