There is certainly no wrong way to cultivate cannabis, as anyone growing cannabis plants in their basement can attest. But, there’s definitely a right way to cost-effectively grow high-quality plants. Expert cultivators optimize key performance indicators like pounds per light, grams per watt, or grams per square foot of flower canopy, since utilities and labor tend to be the most expensive component of any indoor grow operation.

Science laboratories that test marijuana in Oregon say the state's recreational cannabis supply undergoes more testing, and is safer than any food product consumers buy.

A handful of labs just got their state accredited license this October.

Oregon has set the strictest standards in the industry.

"Residual solvents, potency, terpenes and pesticides over there," Molly Lyons points out all the machines she uses to test hundreds of marijuana samples every day.

Her workplace, GreenHaus Analytical Labs in Southeast Portland, is among the first accredited to do it. They test several dozen samples from each marijuana harvest, and the oil and concentrates that it can be made into, for pesticides, mold and potency.

Alaska's new rules could be strictest in the nation.

A hip new industry is attracting excited workers, but ongoing regulations might block some from working in the new field.

To work in a licensed cannabis business in the state of Alaska, employees have to pass a training course for a marijuana handler’s permit. Proposed permit requirements, though, are causing some friction for marijuana industry hopefuls who say the potential rules are “unreasonably impracticable.”

If a new draft is accepted, Alaska marijuana handler card requirements would be the strictest in the country and be inconsistent with similar Alaska alcohol employee permits.

Reisa Clardy appears in the latest No on 4 video, which points to drugged driving.

A new video from the campaign opposing marijuana legalization in Massachusetts features the widow of state police trooper Thomas Clardy, who died in a roadside collision in March.

Clardy was stopped at the side of the road on the Mass Pike in Charlton when a vehicle crossed three lanes of traffic and collided with his cruiser. Police believe the man who was behind the wheel of that car, 34-year-old David Njuguna, was under the influence of marijuana at the time.

In 2014, Colorado became the first U.S. state to implement full legal sales of marijuana.

It had never been done before, and there were bound to be some surprises.

One was that, despite the decades of associating pot use with the haze and skunky smell of a joint, nearly half the marijuana sold wasn’t designed to be smoked, but ingested — eaten or drunk.

Interra Oils, a Washington state-based company that sells marijuana concentrate products–those that can be inhaled using a vaporizer or added to edibles–has to wait until it’s ready to deliver orders to customers before it adds a 16-digit sublot code to each individual package. Each time it gets an order from a store–even if it is the same order that same store made the previous week–it has to create a new manifest and generate a new 16-digit code.

To the red-and-blue map of American politics, it may be time to add green. The movement to legalize marijuana, the country’s most popular illicit drug, will take a giant leap on Election Day if California and four other states vote to allow recreational cannabis, as polls suggest they may.

The map of where pot is legal could include the entire West Coast and a block of states reaching from the Pacific to Colorado, raising a stronger challenge to the federal government’s ban on the drug.

In addition to California, Massachusetts and Maine both have legalization initiatives on the ballot next month that seem likely to pass. Arizona and Nevada are also voting on recreational marijuana, with polls showing Nevada voters evenly split.

Good Chemistry Nurseries, a leading producer of Cannabis products and related services, will offer Cannabis industry insights at the following events over the next four months. Drawing from the company’s experience in cultivation, consumer education, and innovative best practices, Good Chemistry Nurseries executives and team members will participate as moderators, exhibitors, and speakers at a series of public educational and outreach events listed below.

If you still have questions about legalizing marijuana under Proposition 64, tune in to the Register's Facebook page at 6 p.m. Tuesday, Oct. 25, for a live Q&A with editor Andre Mouchard and reporter Brooke Edwards Staggs. Email questions ahead of time to bstaggs@scng.com or ask them live via Facebook during the chat.

Proposition 64, on its surface, poses a simple question: Should people be free to smoke pot in California?

Alberta's justice minister says marijuana has not been a "cash cow" for Colorado, but neither has it led to widespread criminal activity.

Kathleen Ganley travelled to Colorado late last week to talk to U.S. officials about how they dealt with the legalization of marijuana in their state.

The priority for the province, Ganley says, is to get a regulatory framework in place to ensure that pot stays out of the hands of children, and that our roadways remain safe from impaired drivers.

The federal Liberals intend to legalize pot in the spring of 2017, and provinces are scrambling to prepare for the change.