My take on the Kraftcolour Landscape Dyes.
I ordered a sample pack from Wingham Wool Work with a yellow, red, blue, green, black and a purplish hot pink. They came in little "hard to manage with gloves" plastic bags, with instructions and a pair of flimsy gloves that was usable one time.
The "colours" of the dyes are fantastic, bright and strong, but you do NOT need to use as much as it says in the instructions. They are blend-able, but the colours are strong and you can see by the palette of the finished roving (in this case) what hues was used. They also say that no acid is needed, only when dyeing silk and to exhaust the bath, but I find that the wool takes the dye better and faster if I add a little acid (ättika).
When using the "plastic wrap burrito method", I get good results, I steam the rolls and let them cool down and then the dye is almost always totally exhausted.
I am wondering though if it would be more economical to choose another brand, since these dyes are quite bulky, you get 1 kg of dyed fiber with 100 g of dye, and I have seen other brands where you get 10 kg dyed fiber from 100 g. But maybe then there is more work with mordants and acids involved. If you have any insights in this feel free to comment.