For many years now I have been interested in natural dyes. I spent years experimenting with anything I could think of that might hold colour or anything I could find enough of to bung into a pan. Now, as I tend to work with fairly strong colours, I often stick to the commercially available dyes– when time is short and I have a project on the go it tends to be the quickest way to get there– easy enough to buy the material without having to wait for it to grow!
I also really only knit now if I can follow the whole process from fleece to garment, but invariably, although I like most colours, whenever I come to design an article, it always involves green. As I find green the most difficult colour to achieve with natural dyes, I am having to start experimenting again as well as looking through my old recipes. I know indigo is the most obvious way- and I’ve used it, but it is so messy and with two tabby / black and white cats who like to “help”– I prefer not to have blue cats! I know too that woad can give blues to overdye on yellows, but I have no wish to keep stale male urine in our shed for three weeks. Anyway it is already full enough of paints, gardening tools and bicycles!
So I am back to the unusual and obscure. Most of the reference books offer suggestions, but few prove very successful. I use all the standard mordants, but usually achieve nothing more than a muddy olive or a washed out yellow-green. Very little appears to achieve, the clear, strong colour I am looking for. But natural dyeing is an imprecise science so I keep on trying. Having watched James May on his jaunt around France on TV, learning about wine and the concept of “terroir” I know that works equally well with dyes, so what worked last time may not work the next.
Over the years I have achieved greens with these materials:
- Forsythia leaves (alum) early on in the year, grown in a dry area on limestone: a strong clear olive.
- Apple leaves, (alum), early in the year again, same conditions: pale but pretty yellow-green.
- Nettle leaves in summer, (alum) grown in a very wet limestone area in a very sunny year: strong almost fluorescent lime green– but not achieved when I took part of the same batch home to try again, nor in subsequent years from the same source at the same time of year!
- Dark purple lilac flowers, (alum) dry limestone, strong sun: turquoise! And never achieved again!
However, my best results have been achieved with alum/copper and cream of tartar. With many yellow dyes this mordant will give an olive yellow, but when a small amount of logwood chips are added, and the dyebath turned alkaline by the addition of ammonia, or washing soda, the results can be surprising.
Turmeric and marigold flowers have both been relatively successful at giving strong golden-olives, but by far the most successful and repeatable has been weld.
This year I found however, that it is very difficult to get hold of household ammonia now, so looking around for another easily obtainable source of alkali- and remembering the dramatic reaction I got when adding baking soda to a ginger cake recipe- I added about a half a teaspoon to a large dyebath with just weld. The result was equally dramatic! Very fizzy- and the dyebath immediately turned very green! That alone gave me a very strong limey-yellow. By then adding various amounts of logwood chips I achieved some very interesting and useful dark greens-just what I was after. Most are slightly dull, foliage-type greens, but some, later on as the dyebath exhausted, became a dark smoky, sea-blue-green. (Isn’t it difficult to explain colours in words?). I have to admit that a lot of dyestuff was used, but I was very pleased with the results. My only worry was that some of the wool seemed a bit harsher after I had added the bicarbonate of soda. After a year or so, I am also fairly sure that the colour has been light-fast because it still matches the trousers it was designed to go with.
I would be really interested to know whether anyone else has had any successful results with greens- because I am now quite sure there must be some more out there. I suspect I may need an in depth knowledge of the chemical make up of plants, or an enormous botanical-type garden, neither of which I have!
All suggestions gratefully received!
Sue Malcock