Safe plants for rabbits!

 Broad leaf Plantian

Thistle, not all are safe.

 Burdock, Arctium lappa.
Some parts are edible & some medicinal, but it may cause miscarriages.

 Crabgrass

Dandelion, Taraxacum officinale

 Dock, Curly Dock

 Multiflora Rose

 Yellow Hop Clover

 Purselane

 Alsike Clover

 Chicory

 Lambsquarter

 Common Mallow, Malva neglecta Wallr.

 Pumpkin vine

 Mulberry

 Narrow leaf Plantain

 Red Clover

 Purple Deadnettle

 Sycamore

 White Clover, Trifolium repens

 Black Willow

 Yellow Nutsedge