a note on sustainability:

when eucalyptus leaves are gathered and used in Australia, they are indeed an ecologically sustainable dye source. however, when imported from another country they are not. air-freight from Israel to Holland, for example, cancels out the sustainability factor - if declaring your work as "sustainable" it's important to use plants available in the bio-region of the dye studio...and then there's the matter of where the cloth comes from, but that's another story!