Coop-safe Plants?

[moscoops]

I want to spruce up around our coop with some flowerbeds but I want to make sure that I only use chicken safe plants/flowers! Is there anything I absolutely CAN'T use around the coop?

 

[Rock Home Isle]

Chickens have tried to eat everything in my yard at one time or another. The stuff they like, they eat everyday, the stuff they don't like I never see them try again. I have a great book recommendation for you, "Free-Range Chicken Gardens", great book on plants and poultry.