Use dandelions and alum to dye white yarn — the result is a lovely shade of yellow!
Dyeing with lupins. The blog is in foriegn, a germanic language I'd guess, google translate will pobably help, all I got was "lupinen" and "200g merino". which were both pretty easy to translate
Collective Individual: Natural Dye Chart
Black Beans as a Natural Dye on Wool by Herb Knitter, via Flickr
Fra årstid til årstid: Lupin dye. From flowers.
Beetroot yarn- naturally dyed with cochineal and indigo - gorgeous saturated color!
Dyeing with Citrus Peel | CUESA
I Am Kate: How to Dye Yarn with Natural Dyes - great step by step instructions/tutorial with pics.
Riihivilla, Dyeing with natural dyes: Dyeing with rhubarb Värjäystä raparperilla