I want to know the answer to the following question:
Why were vegetal green dyes less than ideal?
All the background I'm provided with is that "Green dyes were made out of the fern, plantain, buckthorn berries, the juice of nettles and of leeks, the digitalis plant, the broom plant, the leaves of the fraxinus, or ash tree, and the bark of the alder tree, but they rapidly faded or changed color.". Is that enough to answer the question?
Answer: yes