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Mordanted Handwoven Hemp-Cotton Towels

Mordanted Handwoven Hemp-Cotton Towels We are offering mordanted handwoven towels for easy natural dyeing. These are handwoven from sturdy, vintage hemp-cotton fabric and have a hanging loop. We’ve scoured and mordanted them with aluminum acetate, our standard cellulose mordant and they are ready to be dyed. Simply dampen and add to a dye bath or sprinkle a selection of dyestuffs on them for a pretty eco-printed towel. The towel sizes range approximately from 14 to 18 inches wide and 18-24 inches (35.5 to 46 cm wide and 46 to 61 cm) long. These fabrics were woven on household floor looms … Read more

Mordanted Cotton Bandana 6-Pack

Our mordanted cotton bandana 6-pack is a bundle of fun! Restock note: We should have an ample supply of bandanas by September 18, 2026. Feel free to place an order and we will ship as we get the bandanas mordanted and packaged. Thank you! There is something so liberating about having a few mordanted pieces on hand and ready for the latest creative impulse. Pick up a pack of our mordanted cotton bandanas, also super useful as table napkins or project squares. Now you can eco-print your latest forage or find, or throw a few bandanas in the dye pot … Read more

White powder on a white circular ceramic tray

Aluminum Triformate Cold Water Mordant

Aluminum Triformate Cold Water Mordant We are pleased to offer a new mordant made from mineral salts called aluminum triformate. Aluminum triformate is a room temperature mordant for all natural fibers including wool, silk, cotton, hemp and linen. It does work best on wool. It also works on a gpL (grams per Liter) calculation or a weight of fiber (WOF) percentage and we’ve used it successfully with both methods. Each of these methods have their advantages for the artisan dyer. If you want to dip a scarf or two in mordant and then move on to dyeing without a lot … Read more

Aluminum Acetate Mordant Bundle – Group & Save

Aluminum acetate is a purified mordant powder that creates bright colors on plant fibers like cotton, linen, hemp, Tencel, viscose and other plant-based fibers. It is an alternative mordant to traditional tannins. Mordanting is an important step in natural dyeing as it helps improve light and wash-fastness. Its purpose is to provide a bond between the fiber and the dye molecule. Without a mordant bond, natural dye colors will fade, change color and wash out. Detailed instructions on working with aluminum acetate are available here. Because recommend using either calcium carbonate (chalk) or wheat bran with aluminum acetate, we have bundled these products … Read more

Tannin + Alum Mordanted Sashiko Thread Bundle

Tannin + Alum Mordanted Sashiko Thread Bundle We are now offering our popular PFD sashiko threads mordanted in three different, beautiful tannin shades. Each bundle of 10 skeins is one tannin color that is also mordanted in aluminum potassium sulfate. This is an easy mordant option to create gradations and nuanced color in your stitching and dye work. The three mordant options are Gallo Tannin (Oak galls), known as a “clear” tannin with a creamy coloration that imparts virtually no shade differences from regular alum mordants. Sumac Tannin, imparts a subtle, soft yellow undertone to many colors, and shifts light … Read more

Tannin and alum mordanted fat quarter blanks

Tannin and alum mordanted fat quarter blanks are ready for the dye pot.

MORDANT MONDAY: Indigo & Discharging Mordants

Mordant Monday is our Monday blog where we provide information about the most important step in natural dyeing! We were feeling the Indigo fever after Britt Boles workshop – Fresh Indigo Five ways, so we revived (no indigo pun intended) this Mordant Monday about Indigo & discharging mordants. YOU ASKED: My question involves the processes of indigo dyeing when combined with other plant dyes that have been mordanted with aluminum acetate. My understanding is that citric acid discharges the mordant and also neutralizes the alkalinity of indigo as a last step in finishing indigo dyed cloth. How would you go … Read more

Mordant Monday: Celebrating Earth Day & Vibrant Valley Blue

Vibrant Valley Blue Indigo Paste We are thrilled to introduce a new, Pacific Northwest-based indigo paste from the incredible growers and dyers at Vibrant Valley Farm. Kara Gilbert and her skilled team created Vibrant Valley Blue, a Persicaria tinctoria indigo extract. This product is based on years of growing, harvesting and experimenting with varieties, cultivation and extraction and they’ve scaled their production from a few hundred starts to a robust crop of over 10,000 plants. The resulting indigo paste is easy to use and creates a beautiful clear blue. Kara used this indigo to dye a number of garments and … Read more

NOW October 11th & 12th, 2025: A Nerd’s Guide to Mordants

A Nerd’s Guide to Mordants A two-part online workshop Saturday September 13 and Saturday September 20 from 10 AM to 1 PM Pacific. Taught by Kathy Hattori Workshop links, materials and equipment list and pre-work instructions will be sent to participants upon registration. This is the nerd’s guide to mordants – what they are, why they are important and how they are used in natural dyeing. Everyone wants to create long-lasting and beautiful plant color and the best way to do that is to mordant properly. The class will experiment with the most popular plant-based tannins and alum accumulators, mineral salt … Read more

MORDANT MONDAY: Iron + Mordant = A “Weird Feeling”…

This post is a great question we resurfaced to answer some much needed clarification on iron! YOU ASKED: I bought iron from you guys to use to dye some wool fabric. I used it in a dye bath with coffee. I used your alum to mordant prior to dyeing in advance. I’m concerned I let the fabric sit too long in the coffee + iron bath because it now has a sort of weird feeling to it, almost a coating on it. Curious if there is a way to remedy this? KATHY ANSWERED: Sometimes too much alum can change the … Read more