Wylie suggested first-time growers start with a hybrid strain and stay away from strains that have OG in the name or are labeled “exotic,” which tend to be finicky. Popular 50/50 hybrid Blue Dream, for example, is a resilient plant that can take higher and lower temperatures, he said.
People can grow plants from seeds or cuttings off an existing plant, also known as clones. Sundberg said cuttings are a gray area because it’s unclear whether a cutting that hasn’t taken root yet is counted as part of the six or 12 plants Arizonans are allowed to grow.
Adults can grow six cannabis plants at home or no more than 12 plants in a house with more than one adult.
What’s the easiest cannabis strain to grow for beginners?
Phoenix Seeds & Clones also sells clones.
After harvesting the plant, the grower should hang the plant upside down to dry for 10 to 14 days, he continued. The stems should feel brittle when dried. After that, trim the leaves off the flowers and put the flowers in an airtight container, like a mason jar. While the flowers are consumable at this point, the flowers can be cured for a better quality.
How long does it take to grow cannabis?
“We don’t see any difference between growing cannabis and growing vegetables and growing lavender, they’re all plants,” said Ryan Jerrell, co-owner of Dig It Gardens in Phoenix.
“I warn people… crawl before you walk,” Wylie said. “Learn to get your plant to grow all the way to fruition, harvest it, dry it, cure it. Then you can build from there. Don’t run out and buy thousands of dollars of equipment.”
And as testing becomes more widespread, its importance is also reaching users, says Marcu. “Consumers are starting to realize that there is a big difference between illicit or grey-market products and those from a licensed operator,” he says. “They can have more confidence in the products than before.”
Although many small-scale cannabis growers at first questioned the need for intensive product testing, most can now appreciate the benefits that the rules bring to the market. “People see the need for quality control and testing,” says James. “It brings a legitimacy to the industry that hasn’t always been there.”
Zheng’s laboratory is one of many that are working with cannabis producers to support and guide this effort. He is studying how the amount and wavelength of light used in growing can affect the plant’s cannabinoid composition. Increasing the amount of ultraviolet light, for example, can increase levels of tetrahydrocannabinol (THC), the main psychoactive component of cannabis. “We want to create a lighting recipe which will help producers get a consistent product,” he says.
Such labs are beginning to adopt standardized tests for potency and purity using gas chromatography and high-performance liquid chromatography. They are also developing methods to identify and measure levels of THC and other cannabinoids, as well as contaminants such as heavy metals and pesticide residues. “These aren’t necessarily new tests that have been created for this industry, but the type that had to be applied for this product,” says Brauninger.
Part of Nature Outlook: Cannabis
Brian Owens is a freelance journalist in St Stephen, New Brunswick, Canada.
Cannabis analytical labs are becoming more professional. “I’ve seen an evolution in the sophistication of the industry,” Brauninger says. “Most of the people running labs now have PhDs and experience in the pharmaceutical industry. It’s light years more sophisticated than five or six years ago.”
Nature 572, S10-S11 (2019)
“Cannabis is just another crop,” he says. “The commercial flower and vegetable industries have been working on the same problems for many years, and they have the technology already.”