1. Plants and People DyesDyes

2. Dyes make the world more colorful. When the first man picked the first berry, dyes were discovered.

3. Dyes have been used, valued, and traded for millennia Ancient clay tablet with cuneiform characters spelling out a recipe for dyeing wool.

4. Natural dyes will dye… cotton wool silk ramie and other natural fibers flax

5. Fastness Refers to the tendency of a dye to resist fading as a result of washing or exposure to light

6. Strike Refers to how quickly the fiber takes up the dye. So, “fastness” has nothing to do with speed, but “strike” does.

7. Plant dyes Rule of thumb: One pound of plant material to one pound of fiber. Plants are simmered or fermented to release the dye into the dyebath.

8. Mordants Mordants are chemicals which help the dye molecules bind to the fibers. Iron, copper, chrome, alum, and urea are often used with plant-base dyes.

9. The dyeing process Prepare dyebath Wash and thoroughly wet fiber Mordant Simmer, ferment, or solar dye Mordant or additive Rinse Dry

10. Keep good records! Results will vary from dyelot to dyelot. That’s half the fun!

11. Indigo Blue Indigofera tinctoria, a member of the Fabaceae. Dyed articles are green until the dye is exposed to oxygen. The process is messy and smelly. You can buy indigo powder or cakes of dye that have already been fermented and are ready to dye.

12. BLUE and PURPLE Berries. Often not washfast. Alkanet—blue-purple Woad, the blue dye of ancient Britons

13. PURPLEPURPLE Orchil lichens. Beautiful colors, but rare, and require fermentation with urea. Logwood—bluish purples, or gray-lavender with additives

14. Pink and Red Brazilwood, Caesalpinia echinata South American tree whose wood yields red dye. Madder, Rubia tinctorum Roots yield a red, pink, or reddish-brown dye.

15. Yellow and Orange Weld, Reseda, or Mignonette— Shades of yellow and gold Eggs dyed with onion skins, gold to brown

16. Yellow and Orange Turmeric, saffron, and safflower are used as food flavoring and dye, but they will dye fabric as well. Goldenrod, common locally, Gives a good yellow dye.

17. Kamala Kamala, Mallotus philippensis, is the source of a strong yellow dye. The hairs on the capsule are the dye- containing part. Sodium hydroxide is needed to release the dye from the extract.

18. Greens Many plants will yield a green dye -- mostly chlorophyll--but these are often not colorfast. More successful greens can be obtained by dyeing yellow over blue or vice versa.

19. Tan, Brown, and Black Many plants will yield tan or brown. The addition of iron makes colors “sadder” or blacker, though it can be damaging to fibers. Oak galls, rich in tannic acid, can be used to darken colors.

20. Walnut hulls make a fine brown Photos from practicalprimitive.com

21. Look at the results from a prior semester!

22. Blue and Purple from Indigo and Logwood

23. We didn’t like the goldenrod yellow, so we overdyed it with kamala and indigo.