>> interesting this is going down the week the world's largest marijuana marketplace comes online. talking about $5 billion potentially this year alone in revenue related to marijuana in california. there are towns across the state that are really banking on that. not just to create marijuana millionaires or have pot for fun, but they turn around struggling economies in towns like desert hot springs. i went there to see how they want to use pot to reverse their fortunes. take a look. all throughout california, towns with struggling economies are hoping to turn things around by getting into the cannabis business. >> looking at the remains of greenhouses that were once thriving. it was when the industry was in great shape in the '90s. now, this is what's happened. this was once a thriving area, yet now most of those greenhouses are vacant. >> reporter: in the '90s, the u.s. signed a trade pact with columbia that devastated monterrey county's cut flower industry. now jeff brothers has taken over