Birdie, being member of a vegan family, is not a wool bearing child. I've searched high and low for a natural plant fiber yarn with the same - or almost the same - qualities as those of wool. It has not been easy. So far I've bought only cotton and a bamboo blend. Here's my contribution in 100% cotton - say hello to Crocus by Helga Isager.
Instead of using the original yarn I used Safran from Drops (raspberry red) and Alba (lime green) on 3.5 mm needles. I chose a size 2 years because Birdie is already 7 months old and the only sizes available by Helga Isager are 6 month, 2 years and 3 years (a bit odd, if you ask me). I had to recalculate everything since my gauge was way off. But I'm okay with that - I love it when I figure it out anyway :)