Starting a cannabis business may seem like a prickly proposition as Colorado dispensary sales decline, but Emily Drost still thinks the time is ripe.\ That's why she and her father, Thomas Laue, named their two new dispensaries Opuntia. Named 500 years ago with a word that later became the scientific label for the prickly pear cactus, opuntias are native to Colorado and known for their vivid purple flowers and sweet fruits…
