Cannabis News
Rethinking “sustainable growing media” in greenhouse production
A perspective paper to be published in Frontiers in Horticulture addresses the widespread but inconsistent use of the term “sustainable growing media” in the horticultural and greenhouse sectors. The publication, written by an international team of researchers and industry experts including Dr Alexander Sentinella of Growing Media Europe, examines how the term has been diluted and proposes a more rigorous evidence-based approach.
“The term is used to mean almost anything and everything,” said Dr. Sentinella. “Along with terms like ‘green’ or ‘climate friendly’, they start to lose their helpful meaning.” The authors argue that this lack of precision undermines research comparability and decision-making in commercial production.
Misconceptions and oversimplification
The article highlights the common tendency to equate sustainability with a single characteristic, such as renewable, circular or peat-free. “People conflate sustainability with individual concepts like climate footprint or renewables, but these are not interchangeable,” he explains. Labels such as “non-toxic” are identified as particularly problematic, as they are often interpreted as an indication of environmental benefit without support.
“‘Peat-free’ means there’s no peat in the mix. It doesn’t show a lower environmental impact or better sustainability unless that’s actually measured.” The authors warn that these assumptions risk misleading growers and managers.
A multi-dimensional and system-dependent concept
Central to the article is the recognition that the sustainability of growing media encompasses three interrelated pillars: environmental, economic, and social. Environmental impacts include not only the climate footprint, but also land and water use. Economic sustainability includes cost, availability and consistency, while social sustainability covers working conditions, health and safety.
“A product may work well environmentally, but not economically or socially. These trade-offs are unavoidable and must be accepted.” The paper emphasizes that sustainability cannot be attributed to individual materials in isolation, but must be assessed within the entire production system.
“Growing media are part of a larger horticultural system. A substrate with a smaller product footprint that reduces yield can lead to a worse overall outcome when the impacts on total production are considered.”
© Growing Media Europe
From hypotheses to measurement
To improve clarity, the authors advocate measurable system-based assessments. Life cycle methodologies are identified as critical tools, including environmental Life Cycle Assessment (LCA), Life Cycle Costing (LCC) and Social Life Cycle Assessment (S-LCA). The latter follows the framework developed by the United Nations Environment Program and SETAC, which allows for the assessment of impacts between workers, communities and supply chains.
“Most conversations focus on reducing footprints, but we really need to measure them. The results may not match expectations, which is why measurement is necessary.”
The paper also notes that social impact continues to be emphasized in today’s evaluations, despite the availability of methodologies that consider factors such as labor rights, occupational health and community effects along the value chain.
Guidelines for the responsible use of the term
Rather than proposing a universal definition, the authors outline minimum requirements for the responsible use of the term “sustainable growing medium”. These include explicitly defining the scope of claims, identifying which sustainability pillars are addressed and supporting statements with verifiable data. Absolute claims are abandoned in favor of comparative and context-specific language.
“The best step forward is to use more precise terminology,” advises Dr. Sentinella. “If you mean lower environmental impact, say so and measure it.”
Implications for industry and policy
The findings have practical implications for producers, suppliers and policy makers. The paper cautions against relying solely on proxy indicators such as peat reduction as a measure of sustainability. “If policies focus on a single attribute, there is a risk of neglecting wider impacts. We must base decisions on results measured in environmental, economic and social dimensions.”
The authors conclude that progress in sustainable growth media will depend less on redefining the term and more on improving how evidence is generated and communicated. “It is better to say ‘more sustainable’ and explain why. Clear definitions and measurable indicators are essential for progress in the greenhouse sector.”
Be careful last published paper.
For more information:
Growing Media Europe
Dr. Alexander Sentinella, co-author
(email protected)
www.growing-media.eu
The Cannabis Control Commission, the government body that oversees the marijuana business in the state of Massachusetts (USA), has decided to temporarily stop accepting new license applications for growing marijuana, both indoors and outdoors. This hiatus officially began on June 16, 2026.
Anyone planning to apply for a new marijuana cultivation license after June 16, 2026 will not be able to do so while this suspension is in effect. The Commission will not accept such requests during this period.
There are two groups that can continue normally. First, anyone who submitted an application before June 16, 2026, will continue to review and process applications as usual. Second, applicants for specific programs designed to help communities historically affected by drug laws, known as the Social Equity Program and the Economic Empowerment Program, are exempt from this suspension if they apply for a smaller-scale “Microenterprise” license.
The suspension will be in effect for 120 days from June 16, 2026, which is currently scheduled to be lifted around mid-October 2026. However, the Commission has the power to terminate earlier or extend further, depending on market conditions.
Source: Massachusetts Cannabis Control Commission
Cannabis News
Federal Marijuana Rescheduling ‘Does Not Appear To Apply’ To Washington Businesses, State Officials Say
The medical cannabis market is expected to grow from $47 billion to $149 billion by 2031, and New Zealand has a real role to play in that story. And thanks in large part to New Zealand Trade and Enterprise (NZTE), the government’s international business development agency, Puro is starting to play.
At Cannabis Europa 2026 London, NZTE hosted an evening event at the City Arts Bar with Puro, New Zealand companies Bluelab, Rua Bioscience and CannFX. Puro called it The NZ Room.
Beyond all things Kiwiana – including Puro brand kiwifruit, Kiwi’d – the room was filled with some pretty amazing people: Ivy League scientists, company founders, patients, advocates, industry players, government officials, Maori tribal leaders and a tough Scotsman. All in the same space with the same true passion for where this industry is going.
It was one of those rooms where conversations went well when they had to end. That’s usually a sign of something well done.
Made possible by NZTE
For Puro, the NZTE relationship has been formative. With ongoing support, Puro has entered the Australian market with 47 unique product SKUs and signed a £7 million supply agreement with UK distributor IPS Pharma.
NZTE understands the potential of the New Zealand cannabis industry. The willingness to support this nascent industry and put New Zealand in the spotlight at events like Cannabis Europa is very significant. New Zealand is a small country and the country’s credibility in international markets is built from relationship to relationship, room by room. NZTE helps build those rooms.
© Cigar
what’s next
For the first time, patients in the UK have access to medicinal cannabis grown in New Zealand. That’s the direct result of years of work by Puro’s team, but it’s not worth much if you can’t connect with buyers globally. Creating international relationships that events like Cannabis Europa make this possible.
“We are grateful for the extensive support from the New Zealand Government that drives our progress, including the Ministry of Primary Industries’ support for our genetic breeding, product innovation and market access goals. This collective effort from agencies such as the Ministry of Business, Innovation and Employment, NZTE and the New Zealand Export Credit Bureau ensures that Mail that started in London will continue to grow in Puro’s international goals,” he said. a statement
For more information:
clean
www.puro.co.nz
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