what is shake?

The origin of the term "shake" comes from the black market. When cannabis is placed in large bags, the buds bump into and rub against each other as the bag is moved. This causes the small leaves on the buds, the "hairs," and the trichomes ("crystals") to fall off and collect at the bottom of the bag. Therefore the more you shake the bag, the more "shake" is created. We do not sell shake, and likely no one else on the medical market sells actual shake. The term has been used to describe trim, and other forms of lower grade cannabis material.

Shake is the dust that's from breaking up the flowers.

Not totally sure but if you have medical card head over. They have highly qualified people ready to help.