Each piece was hand painted using a process that initiates an alchemical reaction between tannin and iron; their interaction is what the brushstrokes leave behind.
Many plants contain these transformative tannins; it is the astringent quality found in tea and witch hazel, and may act as a natural pesticide and protection for the plant. Tannins are found in oak galls, oak bark, staghorn sumac, black walnut hulls, acorns, and more. When combined with iron, the tannins react and blacken; a discovery that lead to iron gall ink, the standard writing and drawing ink used in Europe from the 12th - 19th centuries.
Approximately 22" square
Hand wash/drying is recommended