Muslin roses, dyed with natural dyes from field, hedgerow, garden and salvaged from the kitchen
Left to right - Plum bark, eucalyptus leaves with iron modifier, grape-skins, elderberries. Second row: blackberries, acidified elderberries, damsons, Lady's Bedstraw roots (same chemical as madder, just less of it, hence very pale). Mid row: 2nd go at Lady's bedstraw (higher temperature), onion skins, lichen (Parmelia saxatilis), juniper shoots. Next row: High strength Sumac from leaves just before leaf fall, second steep in the Sumac followed by alum then iron modifier, weak elderberry blue over-dyed by juniper, red onion skins with iron modifier. Bottom row: alkaline blueberries, alkaline grape skins, iron modified alkaline elderberries, and my great mystery: Elderberries Mark 1. See below.
My first attempts using elderberries in 2005 produced this wonderful blue. I STILL don't know quite what happened, as various attempts to reproduce it have failed. It yielded numerous shades of blue, one of which was then overdyed with the juniper illustrated in the row above. Nearly two years later, it appears to be moderately lightfast. As these 'roses' are not intended for yarns or washing, I've not tested it for washfastness. Further notes: 2008. I DID reproduce the blue that year, but found it to be VERY sensitive to light. As all fruit 'dyes', not very wash-fast. A case of adding enough alkali to acquire the 'desired shade', and a tiniest bit of iron.