Mandra on Earth Day Network writes: When I was a child, the cornflower was a very common view in every grainfield in Sweden (we grow barley, wheat, rye and oat), as in many other countries. Then, because of the over-use of herbicides, they disappearded, I haven’t seen them in over 40 years!
When I last traveled from my country-house to Stockholm - they where suddenly there again! Not everywhere, of course, but i saw a huge field with this blue in it - it was a lovely scene! :—)
Centaurea cyanus (cornflower) in the past often grew as a weed in crop fields all over Europe, hence its name (fields growing grains such as wheat, barley, rye, or oats were formerly known as “corn fields” in England). It is now endangered in its native habitat by agricultural intensification, particularly over-use of herbicides, destroying its habitat.