Not all task force members agreed. User advocate Meg Sanders said the covering requirement wouldn't be fair to rural Coloradans.
"I think it goes too far in restricting what people can do on their own private property,'' Sanders said.
Public use also prompted a dispute that wasn't resolved Tuesday. Jackson and others wanted to ban marijuana use on publicly visible patios, porches and backyard. Marijuana activists chafed.
"So I can drink a beer on my porch? But I can't smoke a joint?'' asked marijuana advocate Christian Sederberg.
State Sen. Cheri Jahn, D-Wheat Ridge, said lawmakers would hesitate to regulate something legal people do on private property. What about backyard grills that send the smell of hamburgers into the nose of a neighbor who's vegetarian?, she asked.
"I don't know how far we want to go telling people what they can't do on their own porches,'' she said.
The porch marijuana question was left unsettled. Task force members also put off a decision on proposals from Jackson to exempt law enforcement from maintaining marijuana and marijuana plants seized during criminal investigations.
Potency and labeling recommendations for commercial marijuana will also be discussed later.
The task force has until Feb. 28 to recommend marijuana regulations, which will ultimately be set by the state Legislature and the Department of Revenue, the agency which oversees gambling and alcohol and will also regulate recreational pot.