Pink crocuses?

Still seeking summer reading for CCH, I zipped through The Dive from Clausen's Pier, which turned out to be better than expected. There was a lot of interpolated business with naming the parts of a sewing machine and going through the daily routines of quadriplegics, all of which was reasonably accurate, though superfluous to the plot. Where did the author ever see a pink crocus? Mention of such a phenomenon raised seeds of doubt about other factoidal detail.