oak galls
about oak galls
Oak galls are formed when a type of wasp lays eggs on a oak tree. Wasp and oak type need to be "matching" creating the conditions for the gall to form.
Are the most commonly used tannin - for both creating blacks and for pre mordanting cotton and other vegetable fibers.
Harvestable in August & September in Amsterdam. When collected in summer, check for wasp escape holes. If teh galls are still intact, leave outdoors for possible last wasps to leave the galls.
location | purchased |
year | 2020
collection | BioChromes - Cecilia's Personal Collection
colors | grey, black, brown
compounds | tannin,
