“Untitled” by Anna-Brit Schlaepfer, San Francisco Bay Area, California, USA
Parts used: Cones
Amount: 4-5 cones
Extracted by: Soaking
Thinner: 70% isopropyl alcohol
Application: Dipping
Layers: 1
Substrate: Mixed media artist paper, 200 gsm
Created with: Photogram using dried oak tree leaves
Exposure: 4 days in August, summer 2025
Contrast: ✿ (Low)
Challenges or observations: Colour can be extracted from redwood cones using water, but the process is slower and produces a less intense result. The pigment varies from cone to cone, with no clear pattern related to cone age—except that very young, unopened cones and very old, fully dried cones contained no usable colour. During exposure, the initial red-purple fades quickly within the first day, but with more time, the colour shifts to orange and gradually darkens.
Additional information: Redwood cone pigment can also be combined with ferrous sulfate or rusty iron nails in a white vinegar solution to produce a dark ink, similar to traditional oak gall ink, due to its tannic acid content.
Redwood, California (Sequoia sempervirens) anthotype by Anna-Brit Schlaepfer
This anthotype is part of World Anthotype Day
World Anthotype Day - celebrated annually since 2022 was started by AlternativePhotography.com. Our global community of artists celebrates the anthotype process by submitting prints. These works are added to our database here and compiled into reference books. The purpose is to build a large resource where artist can learn which pigments and plants work and draw inspiration from others. The reference books can be found here:
Volume 1 is the first book in the series:
Volume 1 contains 60 unique anthotype emulsions from 103 artists taking part from 31 countries.
Anthotype Emulsions, Volume 1 – The collective research from photographers on World Anthotype Day 2022
Volume 2 is the second book:
Volume 2 contains 100 unique anthotype emulsions from 139 artists taking part from 31 countries.
Anthotype Emulsions, Volume 2 – The collective research from photographers on World Anthotype Day 2023
Volume 3 is the third book:
Volume 3 pushes the boundaries with emulsions not only from plants and pigments, but also from beans, moss and mushrooms. 135 artists shared their research.
Anthotype Emulsions, Volume 3 – The collective research from photographers on World Anthotype Day 2024
Volume 4 will be the fourth book:
In Volume 4 we will combine entries from both 2025 and 2026 into one beautiful double edition to include even more inspiring work, insights, and pigments to explore. The release for the combined World Anthotype Day book is planned for November 2026 – a richer, more comprehensive collection worth the wait.
Anthotype Emulsions, Volume 4 – The collective research from photographers on World Anthotype Day 2025 and 2026
If you want to learn more about making anthotypes there is also the first "how-to" book:
Make prints using plants - an environmentally safe process!The first book solely dedicated to Anthotypes.
Anthotypes – Explore the darkroom in your garden and make photographs using plants
Rated 9,8 - based on 224 votes
And also the Complete Guide and How-To book:
Learn everything there is to know about anthotypes in the updated edition 2 of our popular How-To book.The extended and complete guide to Anthotypes.
Anthotypes - The Complete Guide to Making Photographs with Plants and Sunlight
If you are already practising anthotype printing, we suggest making notes to document and learn:
50 pre-defined pages for you to document your anthotype process.
Anthotype notes – Document your anthotype process
Rated 10 - based on 8 votes
Looking for a good paper to use?
The Massive Paper chart
85+ papers tested in the argyrotype, chrysotype, cyanotype, palladium, salted paper and vandyke brown process.Pure Inspiration = A cross between learning and inspiration
Pure Inspiration #2: COLOUR
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Pure Inspiration #1: COMPOSITES
A fusion of moments and visions from artists working in alternative photographic processes – featuring 90+ inspirational alternative photographic processes images. Highly creative!Our 25th anniversary book
Alternative Photography: Art and Artists, Edition 2
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World Anthotype Day
World Cyanotype Day
