Free Shipping on orders over €75 (Germany) | €125 (International)


Your Cart is Empty

  • Our Issue 10 Yarns

  • All Yarns

  • Notions & Gifts
  • Gifts for the Knitter in Your Life

  • All things Katie Green!

  • All Notions & Gifts

  • Books & Magazines
  • Making Stories Magazine Issue 10 – Heirloom

  • All Books & Magazines

  • Patterns
  • Sweater Weather!

  • All Patterns

  • About Us
  • We're here to help you stitch sustainability into every aspect of your making.

    With our carefully curated selection of non-superwash, plastic-free yarns and notions, we have everything you need to get started on your next project - and the one after that.

    Here's to a wardrobe of knits we love and want to wear for years to come!

    Read more about us here.

  • Our Sustainability Pledge

  • Our Blog

  • Our Podcast

  • The Making Stories Collective

  • Acid Dyeing vs. Natural Dyeing - A Gentle Introduction

    November 11, 2020 4 min read 3 Comments

    Hello lovelies! We've talked a lot about fiber and yarn in the last few months here on this blog, but one area that we've only ever-so-slightly touched upon is dyeing. While I love a beautiful natural grey or cream in my stash, I also have a very, very soft spot for beautiful colors (dyed on a grey base - be still my heart!). As dyeing is an essential part of most yarns' journey, we thought it'd be interesting to explore the intersection of dyeing and sustainability in a little mini-series in these next few weeks!

    We're starting off today with a short and gentle overview of two of the terms you're very likely to come upon when it comes to yarns, especially those dyed by indie dyers: Acid dyeing and natural dyeing.

    As with all things sustainable yarn and knitting, there's no hard and fast answer to which one of those two is more sustainable. Both have their benefits and drawbacks, and we'll explore those in detail in two upcoming blog posts that feature two fantastic indie dyers. They'll be sharing insights into each of those yarn dyeing methods and their impact on the environment!

    For today, I'd love to start with a short exploration on what acid dyeing and natural dyeing actually is.

    Acid Dyeing

    'Acid dyeing' describes a dyeing process that uses a specific set of synthetic dyes, acid dyes. Synthetic dyes - and therefore also acid dyes - are chemically manufactured. They consist of chemical compounds and their exact makeup differs from dye to dye.

    Fun fact: The first synthetic dye was discovered by accident! In 1856, William Henry Perkin, an English chemist, was trying to create synthetic quinine as a cure against malaria. He didn't succeed in that, but along the way he produced mauveline, the first synthetic dye, out of a coal tar derivative.

    Acid dyes are a sub-group of synthetic dyes that's called 'acid' because you need a dyebath with a lower pH - i.e. an acidic dyebath - for these particular dyes to bond to the fiber. Acid dyes can be used to dye protein fibers - i.e. wool, silk, angora, alpaca, mohair, and the like - and certain synthetic fibers that are chemically similar to protein fibers, like nylon, which is chemically similar to silk.

    They produce beautiful colors - both bright and earthy ones, depending on which type and brand of acid dyes the dyer uses. One critical part of acid dyeing though is that the components of acid dyes can be (sometimes highly) toxic to both humans and the environment. This is why utmost care is really important when it comes to both the production and the usage of these dyes - think protective gear, working in a safe dyeing space, and careful treatment of all waste coming out of the dyeing process (including the waste water).

    We'll dive into all the intricacies of acid dyeing in our deep-dive blog post that's coming up in just a few short weeks. For now, let's take a look at:

    Natural Dyeing

    'Natural dyeing' is used to describe any type of dyeing that's not using synthetic dyes, but natural dyes. Natural dyes are derived from plants, animals or minerals without any synthetic treatment involved. That is not to say that there is no processing at all involved - natural dyes can refer to both 'whole' plant stuffs, for example (think avocado pits, onion skins), and extracts!

    Natural dyes can be used to dye both protein as well as cellulose fibers - i.e. you can dye everything from wool to linen, from alpaca to bamboo with them. That being said, depending on which fiber and dye stuff or extract you use you will often need to employ a so-called 'mordant' to make sure the dye actually sticks to the fiber. There are both plant-based (hello soy milk!) and metal mordants, and the way they're applied differs depending on the dye method, fiber and dye.

    While naturally dyed yarns are often known for their beautiful subtle colors, you can actually achieve brilliantly bright shades with natural dyes as well! That being said, natural dyeing often requires a lot of dye stuff (if not using extracts), water and electricity during the dyeing process. More on that in our deep-dive post into natural dyeing!

    A Note on Botanical and Plant Dyeing

    Both botanical and plant dyeing are terms that have become more common in the yarn world in the past few years. Both can, but do not have to refer to natural dyeing - and this is where it gets confusing! Some dyers use these two terms instead of natural dyeing to describe that they're not using extracts in their dyeing, but only whole plant stuffs.

    Often, though, botanical and plant dyeing are used interchangeably with natural dyeing. If it's important to you to know whether only whole plant stuffs have been used in the dyeing, I would recommend reaching out to the respective dyer and asking them about it!

    3 Responses

    louis tenorio
    louis tenorio

    June 13, 2022

    from the words of my favorite mouse
    “EEK Gags you astound me Brain”
    I have learn something today
    Thank you


    March 12, 2022

    amazing blog and you have explained very nicely

    Sardar chemicals
    Sardar chemicals

    January 26, 2022

    Outstanding.. your outlook on this is amazing

    Leave a comment

    Comments will be approved before showing up.

    Also in Blog

    My 5 Favorite Patterns for Fluffy Yarns
    My 5 Favorite Patterns for Fluffy Yarns

    September 07, 2023 4 min read

    Hello lovelies,

    One of my all-time favorite tasks when we get a new yarn in is to put together pattern and color combinations. And with Bérénice, De Rerum Natura's sustainably produced Mohair / Merino / Silk yarn (fluffy like a cloud!), the possibilities for patterns and colors are close to endless!

    I narrowed it down to my five favorite patterns (well, of right now) in color combinations that showcase the full rainbow of Bérénice colors. I've put a ton more patterns over on our Pinterest Board for pattern inspo for fluffy yarns if you're looking for more!

    Now, though, let's take a look at my top 5!

    Read More
    Can a Silk Mohair Yarn be sustainable?
    Can a Silk Mohair Yarn be sustainable?

    September 07, 2023 3 min read

    Hi lovelies!

    I'm thrilled to be back in this space, and with something really, really exciting at that! For the past year, I've been on the hunt for a sustainably-produced fluffy yarn - we used to carry Knitting for Olive's Soft Silk Mohair which is delightful, but also... everyone has it now? So I was looking for something that was a little out of the ordinary, but also responsibly sourced, and as it goes with anything that involves mohair and silk, that was really hard.

    Cue De Rerum Natura, who secretly have been working behind the scenes at exactly that yarn I'd been looking for: An "as sustainably as it can get" fluff yarn that works perfectly for a broad range of projects, from whispers of lace shawls to holding it together with more substantial yarns.

    Read More
    Issue 10 - Heirloom | Official Pattern Preview
    Issue 10 - Heirloom | Official Pattern Preview

    August 23, 2023 12 min read 1 Comment

    Hi lovelies! A very, very warm welcome to our official pattern preview of Issue 10 – Heirloom. Our Fall & Winter 2023 issue is dedicated to pieces that we love to knit and wear for years, and years to come, and that then become true heirlooms. Passing them on to a beloved friend or family member or tucking them away for the next generation, or the right recipient to come along - these designs will truly stand the test of time.
    Read More