Can flowers make ink??? Experiments with natural dyes.

Using bluebells, geraniums, forget-me-nots, wall flowers, bog weed, Cynthia, to drag over paper to see if the pigments stay vivid on the material. Want to make strong natural dyes for the final stage of the elements on canvas. Bluebells work really well as does Cynthias, forget-me-nots are not so good....will forget. x