Cyanotype Card - Trees Are Life

These cards are reproductions of original cyanotypes that I made based on plants and trees from my own yard and my neighborhood. This one features a neighborhood tree, possibly a walnut tree.

The size of the folded cards is A5 (14,8x21 cm). They are made of FSC-certified BioPuur paper (300 grams), are blank on the inside, and come with an envelope. They can be given or sent as a gift and/or framed as home decoration. 

Cyanotype is a sun print technique that was discovered in 1842, where paper (or other materials), treated with a mixture of iron salts, are covered with the object to-be-printed and exposed to the sun, after which a negative print in blue emerges.