thistle as a good honey plant and wild bees and bumblebees collect nectar

agrestal bee bees bitter bloom blossom bombus bristlethistle bumblebee bumblebees butterfly canada carder carduus cirsium collect collecting couch drawk fieldweed flora flower forb forbs good grass green harmful herb hogweed honey humblebee ill meadow moth nectar pearls persistent pink plant plants prickly scenery sonchus sowthistle spring string thistle undesirable vegetation weed weedage weedery wild