Can you give me a example of plants that can produce color that can also used in watercolor?

Question

Can you give me a example of plants that can produce color that can also used in watercolor?

Answer 1

Some examples:

Reddish dragon's blood, a dark red resin exuded from the fruit of the rattan palm, Calamus draco

Dull yellow natural gamboge, a moderately saturated middle yellow pigment made from the gum of the several species of garcinia tree, in particular Garcinia hanburyi.

Dark blue indigo, an ancient and widespread colorant made from the fermented gray green leaves and flowering stalks of over 30 related plant species, including the medicinal indigo shrub (Indigofera tinctoria) native to India, dyer's woad (Isatis tinctoria) and dyer's knotgrass (Polygonum tinctorium).