During my Pinterest surfing adventures, I stumbled across a new-to-me technique called anthotype, defined by alternativephotography.com as “…a photographic process using plant-based emulsions and sunlight.”
This unique art form is created by placing objects on paper coated with an emulsion made from a plant-based pigment mixed with alcohol. The paper is then placed in full sun until the emulsion not protected by the objects is bleached out. The piece is then submerged in a solution made with Borax or baking soda and water which stops the reaction and turns the yellow into a brownish-orange hue.
Note: Turmeric stains EVERYTHING. Wearing gloves—plastic or rubber—and an apron or smock is a must for mixing and applying the turmeric emulsion.
EQUIPMENT
Two disposable plastic cups or glass containers
Popsicle stick or disposable spoon
Coffee filter
Foam paint brush
Cookie sheet
Piece of glass the same size as watercolor paper
Oblong cake pan
MATERIALS
1 tsp turmeric powder
3 tbsp 70%+ isopropyl rubbing alcohol
2 tsp baking soda or Borax
1/2 cup warm water
Waxed paper
Watercolor paper
Pressed flowers and leaves
1. Cover cookie sheet with waxed paper, then place watercolor paper on top.
2. In one cup, mix turmeric and rubbing alcohol with popsicle stick or spoon. Let sit for three to five minutes.
3. Place coffee filter in second cup. Pour turmeric mixture through the filter. Squeeze the excess liquid from the filter and discard filter.
4. In a dimly lit area, use foam brush to apply a thin, even coat of the turmeric mixture to piece of watercolor paper.
5. Place the tray in a dark room or a cupboard until paper is completely dry—preferably overnight.
6. In a dimly lit area, arrange pressed plant material in desired pattern on the watercolor paper. Add glass on top to prevent items from shifting.
7. Place tray outside in an area that receives full sun until the turmeric emulsion has faded. This takes several hours.
8. Mix baking soda and warm water in an oblong cake pan.
9. Remove plant material from watercolor paper. Place paper upside down in the baking soda mixture to stop the exposure, just until coated, then remove. Let your masterpiece dry right-side up on the tray.
Anthotypes remain light-sensitive and are best stored or displayed in a frame away from direct sunlight.
Cathy Monrad is the graphic designer for Upstate Gardeners’ Journal.
This article originally appeared in the September/October 2026 issue of Upstate Gardeners’ Journal.
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