In an article on seattlepi.com, Jake Ellison notes that Washington’s Liquor Control Board has set no limits on the size of recreational marijuana grows. As far as the state is concerned, a cultivation business can be as large as it wants, so long as it is properly secured, staffed and funded to comply with all state rules. Seattle is taking a different approach. Indoor grows will be limited to 50,000 square feet. Cultivation operations will be limited to certain industrial zones (slightly more than half of Seattle’s industrial land).

Also in this article is the pondering of Washington’s “marijuana adviser’ Mark Kleiman on how to limit marijuana operations in the state as time progresses. He considers how the state could enact a limit on the amount of THC produced in the state, which would then auction quota rights off to businesses. His reasoning is that otherwise growers will be trying to maximize the amount of THC in each plant and the amount of plants in any given space. These things will certainly happen anyway. THC cap or not, businesses will always strive to be more efficient.