(AP Photo/ Timothy J. Gonzalez)
Juliano Hamana, 24, samples the aroma of one of the offerings at Shango Premium Cannabis, in Portland , Ore., Thursday, Oct. 1, 2015. (AP Photo/ Timothy J. Gonzalez)
Cannabis clones sit on display at Amazon Organics, a pot dispensary in Eugene, Ore. (AP Photo/ Ryan Kang)
Davia Fleming, 29, center, is surrounded by media members as she becomes the first shopper at Shango Premium Cannabis, in Portland, Ore., Thursday, Oct. 1, 2015. (AP Photo/ Timothy J. Gonzalez)
Customers look at product displays at Shango Premium Cannabis, in Portland , Ore., Thursday, Oct. 1, 2015. (AP Photo/ Timothy J. Gonzalez)
Shane Cavanaugh, owner of Amazon Organics, a pot dispensary in Eugene, Ore., arranges the cannabis display in his store. (AP Photo/ Ryan Kang)
A bag of cannabis buds are seen at Amazon Organics, a pot dispensary in Eugene, Ore. (AP Photo/ Ryan Kang)
Taylor Myhra, center, helps customers in Shango Premium Cannabis, in Portland, Ore., Thursday, Oct. 1, 2015. (AP Photo/ Timothy J. Gonzalez)
Dab rigs are put on display at Amazon Organics, a pot dispensary in Eugene, Ore. (AP Photo/ Ryan Kang)
A medical marijuana dispensary displays a sign Monday, Sept. 28, 2015, in Portland, Ore. (AP Photo/ Gosia Wozniacka)
PORTLAND, OR -- Oregon marijuana shops began selling marijuana Thursday for the first time to recreational users, marking a big day for the budding pot industry. Tap here to read more.