Science News: High in the Rocky Mountains of Colorado, mustard plants slumber through the winter in snow-covered meadows. When spring finally reveals these hardy perennials, the plants reach for the sky, unveiling tiny pink or white flowers.
This annual rebirth is timed to the snowmelt, and as warmer temperatures have moved melting earlier and earlier in the year, this particular mustard, known as Drummonds rock cress (Boechera stricta), has followed. The herbs trumpetlike flowers now bloom about 13 days...