My first Experiment to produce green with Buckthorn was one from Mary Merrifield's Original Treatises, a 15th century recipe from Bolognese MS De Fiendis Veridibus (Merrifield 426)
I picked the berries in August in Westbrook, Maine. Here's that first recipe:
|Mary Merrifield's Original Treatises pg. 426|
The alum water I used in the following paints is pure alum, Aluminum Sulfate, Al2(SO4)3, and distilled water in a 1:10 ratio. This should make an acidic solution.
"A" consisted of a drop of the buckthorn and white vinegar juice as well as Winsor Newton Gum Arabic. It painted out blue then turned green the next day.
"B" a drop of the vinegar-buckthorn berry juice, one drop of the gum water and a drop of alum water. It painted out green immediately.
|A on the left, B on the right. Still wet B is already green.|
"C" is the same as A in a clam shell, it painted out red purple-y and turned green by the next day.
"D" is C, juice and gum in a clam shell, with a drop of the same 1:10 alum water in B and like B it painted out green and stayed green.
Ultimately there will be an updated picture of after all of them turned green and one of my notes too!
And more experiments: