Blue Roses.
Wasn't that in 'The Glass Menagerie'?

This answers the question of what to give Michelle Obama on Valentine's Day: Blue roses for a red lady.

Good grief. BLUE? Arguing about color is like arguing about socialism with a left liberal, but that flower is lavender as it appears in that photo. Blue is here:

http://farm2.static.flickr.com/1374/544463920_70502359b1.jpg

As for the seed bank link, that is all and well, but without qualified (non-urban) living people to steward those crops through the seasons, years and millennia, vault storage is just more self-serving doomsday science. It is not the seeds per se that are valuable, it is the specific relationship between growers and their environment to specific crops. Farming live organisms requires living knowledge passed from one generation to the next. If that cycle is broken no amount of stored germplasm diversity will save us.

But if an asteroid hits Spitzbergen, we're screwed.