I never heard of that before, Durgan. I did look on Google. The retail sellers of Guelph Millennium crowns seem to be in Canada or the UK. It got rave reviews for production when it was trialed in Ohio several years ago.
http://vegnet.osu.edu/sites/vegnet/f...us%20trial.pdf
Our asparagus root in the US is dominated by the Jersey series. You can buy them anywhere from Wal Mart to high end garden stores.
I wonder what type we eat from the supermarkets.
- Lisa