acorns and a spoon of tan powder on pale fabrics

MORDANT MONDAY: Which Plants Need Mordant?

We get mordant questions all the time at Botanical Colors so why not create Mordant Monday??? Got mordanting questions? Email [email protected] I keep getting mixed answers from people about dyeing with plants from my yard and whether I need to mordant or not when using them. Advice? I think some of the confusion arises over what plant we’re talking about. Many plants contain high levels of tannins and these can be used to mordant and dye in one step, rather than using the traditional mordant method with aluminum sulfate or aluminum acetate. Traditional tannin mordants include: Common garden and kitchen … Read more

MORDANT MONDAY: Mordanting Cotton & Freezing Clothes

We get mordant questions all the time at Botanical Colors so why not create Mordant Monday??? Got mordanting questions? Email [email protected] What is Mordanting? Mordanting is the most important process of preparing fibers to accept color. Using a mordant helps to ensure the most durable and long-lasting colors. With the exception of indigo (as a vat dye, it does not require a mordant), this is not an optional step. However, there are many different mordants you can use. Deciding which mordant to use comes down to the types of fibers you want to dye and how much time or energy … Read more

Mordant Monday: Chestnut, Fustic, Iron and Indigo

This week’s Mordant Monday focuses on Chestnut. We used Chestnut extract in our gradation and absolutely loved the combination of Chestnut, Fustic and Iron with Indigo. This gradation is slightly different than our previous experiments. This time I did not overdye with a warm shade like Madder, to get corals and pinks. I wanted to focus on green and blue. Like previous examples, when a tannin is combined with other colors you can get exciting mixes and beautiful color blends that harmonize and are perfect for patchwork, creating gradations and stitching. If you are a yarn person, many of these … Read more

Mordant Monday: R U Mordant Curious?

For Mordant Monday, we answer your Mordant Questions and dive into everyone’s favorite topic: MORDANTS. Are you Mordant Curious? I received a great question about the mordants we carry. Like, you have so many. What is the difference? Does it really matter? Having a variety of mordant choices allows you as an artist to consider your materials before you start creating. For example: if you are dyeing a cellulose fabric, you can use aluminum acetate, or you can use a tannin pre-mordant and then apply aluminum sulfate as the mordant. They will give you different results. We’ve created a table … Read more

Mordant Monday: Walnut, Madder, Iron and Indigo

Black Walnut Juglans nigra is one of our most interesting tannins and it’s a color that’s native to the North American continent. The entire tree contains color but it is in the green hulls that we find a strong concentration of dark tannins yield light beige to golden brown on cellulose. On wool, black walnut really shines and makes a rich brown shade. Walnut Hull Powder from black walnut (Juglans nigra) is a common source of brown dye throughout North America. The fleshy hulls are full of tannin, juglone and other pigments and are the primary source of the dye. … Read more

Mordant Monday: Tannins and Teal, Osage Edition

We have a new type of Mordant Monday for you today where we dive into the world of Tannins! We want to show you how to use our tannins to mordant, either in combination with aluminum sulfate, to get rich long lasting and substantive color, or to use as a base for color mixing. We will explore our tannins over the next few weeks.  In the photo pictured above we dyed our hemp towel irregulars first in an Indigo Henna Vat. We then used a 15% WOF bath of our osage saw dust to get this beautiful hue. Osage orange … Read more

MORDANT MONDAY: A Plant-Based Option For Mordanting?

We get mordant questions all the time at Botanical Colors so why not create Mordant Monday??? Got mordanting questions? Email [email protected] YOU ASKED: I’m trying to make my natural dye practice completely plant-based, which also includes my mordant. I’ve used sumac and different nuts in the fall, tea and avocado pits, but do you sell a plant-based mordant? I still want to get great color and not all plant-based “mordants” are getting me to where I want to be. KATHY ANSWERED: We do! Symplocos is an exciting alternative that will give you the mordanting power as your base. We are … Read more

Iron( ferrous sulfate)

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

We get mordant questions all the time at Botanical Colors so why not create Mordant Monday??? Got mordanting questions? Email [email protected] 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 … Read more

MORDANT MONDAY: Scouring & Mordanting Raw Silk

We get mordant questions all the time at Botanical Colors so why not create Mordant Monday??? Got mordanting questions? Email [email protected] YOU ASKED: I was wondering what is the best way to scour or mordant raw silk? I know you have on your site that info for silk but just wanted to ask if that applied the same for raw silk as well. KATHY ANSWERED: Raw silk, also referred to as silk noil, is the carded short waste pieces from silk reeling that are carded and spun before weaving or knitting. The fiber is medium weight, textured, matte and can … Read more

MORDANT MONDAY: How To Recharge Mordants & Assists

We get mordant questions all the time at Botanical Colors so why not create Mordant Monday??? Got mordanting questions? Email [email protected] YOU ASKED: I have mind-bending questions about the mordants that can be refreshed like aluminum acetate, aluminum sulfate and aluminum triformate. Is it different with different mordants? And what happens with the assists like soda ash or cream of tartar, if I put them together with the mordant, do I also need to recharge it as well with 25/50%? KATHY ANSWERED: Typically aluminum sulfate, aluminum potassium sulfate and aluminum acetate are refreshed at 50% and aluminum triformate is refreshed at 10%. … Read more