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Greenhouse hygiene programs emphasize deep-penetration sanitation during cleanouts

Published

9 months ago

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During winter clean-ups, greenhouse operators prepare facilities for the next production cycle, with hygiene remaining a critical focus. Effective sanitation during crop transition plays a key role in reducing pathogen pressure and promoting long-term crop health, particularly in operations that manage virus risks such as Tomato brown rugose fruit virus (ToBRFV).

Disinfectants commonly included in greenhouse hygiene programs include Intra Multi Des GA, supplied in North America by Houweling Americas. “This product is widely used by vegetable and ornamental growers as part of comprehensive cleaning and routine sanitation strategies, especially where deep penetration is required on complex surfaces,” says the Houweling Americas team.

© Houweling Americas

Getting under the surface
Biofilms and organic debris continue to limit the effectiveness of many disinfectants, harboring microorganisms in cracks, crevices, and porous materials. According to the Multi Des GA technical team, the formulation is designed to address this challenge through penetration rather than surface activity.

“Intra Multi Des GA has five active ingredients that work together to provide strong penetration properties, allowing the product to reach microorganisms hiding in difficult access areas,” the team explained. While not positioned as a dedicated biofilm remover, the formulation is intended to reveal and eliminate pathogens sheltered beneath biofilm layers.

For best results, a two-step sanitation approach is recommended: deep cleaning to remove organic matter and biofilm, followed by disinfection. “Skip the cleaning step increases the risk of completely eliminating pathogens,” the team noted, highlighting the continued opportunity for farmer education around proper hygiene sequencing.

The role of cleaning before disinfection
As part of the Intracare product portfolio, Houweling Americas also supplies Intra Foam Organics, a cleaner designed to remove organic material prior to disinfection. Organic debris can significantly reduce disinfectant performance if not completely removed, especially on high-traffic or porous surfaces. When used as a first step, cleaners like Intra Foam Organics help ensure that disinfectants can come into direct contact with target pathogens.

Performance on porous and uneven surfaces
Concrete floors, block walls and other porous greenhouse materials remain among the most difficult areas to sanitize. According to internal tests, Intra Multi Des GA works reliably on these surfaces, moving into the micro-cracks where pathogens can persist.

“When applied to porous materials such as concrete blocks, the formulation moves significantly across the substrate,” the team explained. “This behavior is different from traditional disinfectants that remain on the surface and do not reach the embedded microorganisms.”

© Houweling Americas

Broad spectrum pathogen control
Growers of all types of crops rely on Intra Multi Des GA to manage a wide range of pathogens, including fungal, bacterial and viral threats. The reported efficacy against ToBRFV has made it an essential component of hygiene protocols in tomato production.

“Intra Multi Des GA has shown excellent efficacy against ToBRFV and has proven effective in eliminating the virus on contact when used appropriately,” the team reported. Beyond viral control, growers also use the product against pathogens such as Fusarium and Pythium in crop and ornamental systems.

Waste behavior and crop turnover
Unlike non-residue disinfectants, Intra Multi Des GA is designed to leave a residual effect on treated surfaces during cleaning, providing extensive protection between crops. This waste is not intended to come into contact with the collected products, but is used to maintain sanitation during downtime.

Operational efficiency is another matter. The product is applied at a low concentration of use, requires a short contact time and usually requires only one application, allowing rapid crop rotations without compromising hygiene standards.

Long-term sanitation results
Growers who consistently incorporate Intra Multi Des GA have reported cumulative improvements in crop rotation hygiene programs over multiple seasons. In one documented case, a Dutch tomato operation managing ToBRFV reported no subsequent infections after integrating the product into the cleaning protocol.

“Starting clean remains one of the most effective ways to reduce the risk of early cycle infection,” the team emphasizes.

Supporting North American producers
Houweling Americas supplies Intra Multi Des GA and other Intracare solutions through established distribution partners and provides technical support to assist with implementation. In addition to hygiene products, the company’s portfolio includes nutrient solutions, growing substrates, LED lighting, water treatment technologies and biostimulants such as Intra Eco Shield, with Intra Boost, a next-generation willow bark-derived biostimulant, scheduled for a North American launch in early 2026.

Based in British Columbia and Ontario, Houweling Americas works closely with growers to develop integrated solution programs that support yield, plant health and resilience. The company is part of Royal Houweling, a Dutch family business founded in 1925 and recently recognized with royal status for its long-term commitment to horticulture and sustainability.

For growers seeking technical guidance on hygiene protocols or product performance, the Houweling Americas team encourages direct engagement for further assistance.

For more information:
Houweling America
1-800-252-5824
houwelingamericas.com

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Fluent to sell New York license and operations

Published

2 months ago

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July 30, 2026

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Fluent has entered into a definitive agreement to sell Etain, LLC, the Company’s New York-based operating entity. The purchase agreement was signed on July 22, 2026. The transaction provides for the sale of Etain’s Registered Entity license, certain of the Company’s New York operating assets and related New York leases for cash, subject to customary purchase price adjustments.

The Company believes the Transaction advances its strategic objectives and expects the Transaction to comply with applicable regulatory requirements in connection with the Company’s previously announced plan of arrangement for Vireo Growth Inc. (the “Deal”) while providing for an orderly transition of the New York operations to an experienced operator committed to serving patients and consumers.

Completion of the free transaction is subject to closing conditions, including, among other customary conditions, approval of the change in ownership by the New York State Cannabis Control Board and the completion of all conditions to the completion of the Agreement.

For more information:
FLUENT Corp
getfluent.com/










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Marijuana Has ‘Horrific Health Risks’ And No Medical Value, Former Trump Attorney General Claims

Published

2 months ago

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July 30, 2026

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A former US attorney general who served in President Donald Trump’s first term says marijuana poses “tremendous health risks,” has no medical value and should not be rescheduled under federal law.

“Marijuana redistricting would create a false impression that it is safe, reduce penalties for illegally selling the drug, and provide a large tax windfall to those who legally supply it,” William Barr wrote in a Wednesday op-ed for The Washington Post, Kevin Sabet, CEO of the prohibitionist organization Smart Approaches to Marijuana. “That would be a disaster.”

The opinion comes as the Trump administration moves forward with cannabis reregulation.

According to an order issued in April by US Attorney General Todd Blanche, Marijuana products regulated by a state medical cannabis license were immediately changed from Schedule I As did marijuana products approved by the Food and Drug Administration (FDA) under Schedule III of the Controlled Substances Act (CSA).

an administrator The hearing is looking at the broader rescheduling of marijuanawith The Drug Enforcement Administration (DEA) has been tasked with advocating for cannabis reform highlighting the testimony about the medical benefits of marijuana and its relative safety compared to other substances such as alcohol and opioids. It included appearances by a Food and Drug Administration (FDA) scientist and a doctor from New Hampshire. Medical marijuana provides relief to pain patients and can serve as an alternative to opioids.

But Sabet and Barr, who served as Trump’s attorney general from 2019-2020, argued that “the evidence presented at the hearing did not support the rescheduling of marijuana” and instead “confirmed what decades of data have shown: raw marijuana has no scientifically established medical value and is highly susceptible to abuse.”

After the parties to the hearing have filed termination rights, the DEA administrative law judge overseeing the proceedings will make a recommendation regarding rescheduling, and the agency administrator will make a final decision.

DEA Administrator Terrance Cole only organizations and individuals opposed to marijuana reform have been invited to the hearing as a designated participant – telling supporters that they do not meet the definition of “interested person” to participate because they have not been “affected or prejudiced by any rule or proposed rule that may be issued.”

—
It’s Marijuana Time tracking hundreds of cannabis, psychedelic and drug policy bills in state legislatures and Congress this year. Patreon supporters by pledging at least $25/month, you’ll get access to our interactive maps, charts, and audio calendars so you never miss a development.

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The former attorney general’s new opinion says “the stakes couldn’t be higher”, arguing that “marijuana today is more dangerous than ever” and that it is “addictive”, throwing out a list of alleged harm to mental and physical health.

“These unhealthy effects are a predictable result of a powerful and addictive drug being normalized, commercialized and marketed as a medicine,” Barr and Sabet say. “It would be one thing if marijuana had medical value. But there is no credible evidence that marijuana is an effective treatment for any medical condition, despite the millions of dollars spent trying to prove otherwise.”

The Department of Health and Human Services (HHS) published a 252 analysis in 2023 that concluded that marijuana had accepted medical value and should be rescheduled.

The new opposition piece also says that “rescheduling would unlock enormous revenue for the corporate marijuana industry by bringing it into a category that has not been covered by a longstanding reduction in federal drug tax deductions,” referring to a law known as 280E, which repeals Sections I and II.

“This, in turn, would allow the industry to spend even more on advertising and marketing to young people,” Barr and Sabet. he wroteArguing that “those who would lose this dragon in society are laying the foundations for another Big Tobacco”.

The Sabet organization, SAM, is one of several parties Challenging the Marijuana Redistricting Process which have been upheld by a federal Court of Appeals. those separate parts State attorneys general have filed lawsuits against cannabis reform, Opponents of marijuana legalization and a a cannabis-based biopharmaceutical corporation.

SAM’s lawsuit was signed by attorneys at Torridon Law PLLC, where Barr is a partner.

The team announced in January that it was Hiring Barr’s firm to fight cannabis rescheduling After Trump signed an executive order directing officials to quickly complete the process.

During the first Trump administration, Barr was accused by a Justice Department official Directing improper anti-company investigations into multiple cannabis company mergers– Accounting for almost a third of the division’s cases in 2019.

Several Democratic members of Congress introduced a resolution calling for an investigation into Barr’s possible impeachment, saying “abused the power of his office” to improperly investigate marijuana businesses while engaging in other allegedly illegal conduct.

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How much red light does cannabis really need?

Published

2 months ago

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July 26, 2026

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When growers pull out two LED fixtures side by side, the first number they usually discuss is percent red. This is an easy specification to fix. They are efficient at producing red photons and incredibly efficient at photosynthesis, and cannabis eats away at the flower. So more red must be better, right?

Not so simple. Red is an input to a spectrum, and the spectrum is an input to a room. There is no single spectrum that wins everywhere. An indoor room pushes hard, a greenhouse that soaks up sunlight, a temperamental cultivar, and aggressive yields call for something different. Knowing what each light strip actually does allows you to choose a tool that fits your grow instead of one that just has a big number on the sales page.

© JumpLights

Blue: structure
Blue (approximately 400-500 nm) gives shape to the plant. It maintains dense growth, strong stems, tight internodes and allows it to develop as desired. It also encourages stomatal opening, so the plant manages water and gas exchange better. Get blue and you’ve built a plant that can carry heavy flowers with no problem.

Green: access
Green was eliminated as the wavelength is “reflected” by plants. It turns out that it does a real job. Blue and red are absorbed above; the green goes deep into the fat and reaches the leaves that are never touched by the above photons. In a compact room, it’s the difference between plants photosynthesising from the top down and those that work only from the top. Green won’t replace your red or blue, but it does carry usable light where they can’t reach.

Red: engine
Red is the horse of the flower. It absorbs as efficiently as anything in the spectrum, and is responsible for most of the biomass you’re after. Redder generally means faster flower development, more weight and better efficiency per watt.

But red has a ceiling, and it’s tied to what you run. Push PPFD upwards with a heavy red spectrum and some cultivars begin to whiten at the top: the flower should be dense with pale, washed tips. Genetics, intensity, barrel temperature and your general environment all feed into it. If you’re using aggressive light levels, a lower red spectrum will buy you room before that becomes a problem, leaving you almost no photosynthetic punch to get it.

Far Red: More than Emerson
Far-red (700-750 nm) appears in more devices every year. It contributes little to photosynthesis on its own, but it moves plant morphology and works with red through the Emerson Enhancement Effect. Used properly, it helps to deepen the light, encourage uniformity of the canopy and encourage the response of the bloom. The key word is small. A touch of far red rounds out a spectrum; he’s not there to make a show.

Matching the red percentage with the room
Cannabis addresses the entire spectrum, not a line on a spec sheet. Reds cause flowers, but blues, greens and crimsons give the plant something it needs. Where you land in red refers to how you grow.

A lower red spectrum (30-40%) captures more blue and green, gives you better morphology, reduces the risk of photobleaching, and holds up when you’re running extreme PPFD. Moderate spectrum (40-55%) is the sweet spot in commercial greenhouses: strong photosynthetic efficiency, strong flowering, balanced growth. A high-red spectrum (70%+) makes the most sense in a greenhouse, where the sun is already giving you lots of blue and green and your supplemental light can cast effective red to fill the gap.

Where does the ETS MAX series fit in?
This is the thinking behind the JumpLights ETS MAX series. Instead of forcing a spectrum into each room, it rarely comes up because a greenhouse and a high PPFD indoor flower room are not the same problem.

  • ETS MAX 4C41% red: for indoor rooms operating at very high intensity, where photobleaching is a real risk. The wider, red bottom balance allows you to push the tops without overcooking them
  • ETS MAX 4A48% red: balanced internal spectrum that maintains high output while controlling bleaching.
  • ETS MAX 5B57% Red: A high-performance indoor option. Moderate red, marked with efficiency and flower at the same time, up to 3,450 μmol/s, with efficiency that holds the spectrum.
  • ETS MAX 7A76% red: built for the greenhouse. The sun already supplies blue and green, so this leans heavily on the complementary red, up to 3,900 μmol/s in the infrastructure most greenhouses already have in place.

Bottom line
Choosing an activity is not a competition for the highest red number. The winning spectrum is the one that matches your environment, your intensity, your genetics, and what you’re trying to produce. Combine spectrum, intensity, environmental control, light distribution and genetics, and you’ve got a lighting strategy. Keep a spec isolated and all you’ve got is a bright room.

The ETS MAX line was created around this idea: choose the spectrum of the room you actually have, indoor or greenhouse, and let the device work with your grow rather than against it.

For more information:
JumpLights
www.jumplights.com

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