If you are planning to grow marijuana in Colorado, it is legal to do so. As early as 2012, voters of Colorado approved the use of recreational marijuana in the state. 2000 was the year medical marijuana was legalized. For residents who want to grow their marijuana in Colorado, it is allowed. You can now order bulk cannabis seeds in Colorado. Residents may own up to 12 pots of marijuana per household and each resident may own 6 (pots) as long as you are at the legal age of 21-year old.