Having seen lovely blue and green dyes from irises, I harvested some of these yellow and deep purple ones for printing.
I bundled the irises and some pink rose petals into a cotton and silk blend, bias slip dress, and gently steamed it for around an hour. Unwrapping the bundle later, I was excited to find bright blues and almost neon yellow-greens.
The pink petals also gave off a little colour which works nicely with the blue. Hopefully I will have a photo of the full, finished dress soon!