For blacks and greys without the petrochemicals turn to Black Walnut (Junglans Nigra).
Whole Black Walnut hulls for blacks and greys using exclusively natural plant matter. Like all our dyes, these American walnut hulls are untouched – nothing added nor taken away.
In the Hoodoo tradition, walnut leaves and nuts are used to put jinxes on people. I prefer to make ink, but whatever floats your boat!
I also heard that a full sized black walnut tree close to your house will attract lightning away from your house better than any other type of tree. (you pays your money, takes your chances with that)
Harvested sustainably in the USA and presented without the addition of any chemical. For thousands of years people have been dying with Black Walnut, order some today and give it a go! Test samples are available here.