The world's cannabis culture, curated once a week.

Puffco, known for its electric dab rig, the Peak, held its block party Puffcon on October 3 and 4. The venue was Los Angeles Center Studios, a film studio lot in downtown LA. This was the sixth edition.

One of the main draws was the Glass Village. More than 100 glass artists from around the world gathered there and blew glass in front of visitors.

Metro Boomin headlined Saturday and Action Bronson headlined Sunday, with Curren$y and The Alchemist & Boldy James also on the bill. Food came from Smorgasburg, LA's popular open-air market, alongside a silent disco, art installations and booths from more than 50 brands.

Puffcon began as a gathering open only to people who owned a Puffco device. Saturday and two-day passes were still limited to owners this year, but Sunday was open to anyone.

In Parachute, a town in western Colorado, there is a cannabis farm where ducks wander the fields. It is Edun, run by Jimmy and Michelle Brinkerhoff.

The ducks' job is to eat roly-polies, slugs and snails. As they walk, they also keep weeds down and work air into the soil. Their names are SaDIVA, InDUCKa and HIGHbird, plays on sativa, indica and hybrid.

Edun follows a natural farming method that originated in Korea. It builds living soil by layering rock, sand, clay and compost to recreate natural strata, and feeds it with a homemade liquid of fermented plants. It also uses charcoal made from sunflowers and fermented seawater.

The approach takes 20 to 30 percent more labor than conventional growing, and THC comes in at about 22 percent, lower than the state's top sellers. Edun does not sell flower as it is. It processes its harvest into concentrates, edibles and pre-rolls.

Founded in 2016, Rove is a California brand that makes vapes and pre-rolls. On September 30 it announced its launch in Ontario. Retailers order through the province's official wholesaler, and the products are already on shelves.

What it brought is the Diamond Series Minibar, a compact all-in-one vape. Diamond-like crystals are slowly drawn out of flower that was frozen right after harvest, then turned to liquid and filled into the device.

It comes in three strains: Granddaddy Purp, Skywalker OG and Blue Dream. The company says the formulations are the same as those it sells in the United States.

The company's president says Rove had had its eye on Canada for years. It plans to expand to other provinces over the coming months.

In the Netherlands, only ten licensed companies now grow cannabis legally for coffeeshops. One of them is Hollandse Hoogtes in Bemmel, in the province of Gelderland. The Dutch cannabis outlet CNNBS presented a video tour of the facility.

Strain selection is in the hands of Karma Genetics, a breeder with many cup wins. The company holds more than 200 strains and keeps 20 to 25 in production at a time. A candidate plant does not move into full production until its harvest has actually been tried.

Each of the roughly 400 mother plants carries its own QR code, so flower can be traced from the plant it grew from to the shop it reached. Harvested flower is trimmed by hand and bagged by hand.

The facility also has a hash lab. Frozen flower is washed in ice and cold water to collect the resin, which is sorted into four grades, and rosin is made as well. The lower grades go to the kitchen, where a chef with experience in a Michelin-starred restaurant turns them into THC gummies in 5 mg and 20 mg doses.