Hydroponics Daily

Daily clips of hydroponic science throughout the whole of 2025 Presented by Dr Russell Sharp Brought to you by the team behind Gold Leaf - seed to harvest with just one bottle of feed.

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Episodes

Wednesday Nov 12, 2025

Dr. Russell Sharp breaks down Hydrofarm’s latest results, falling sales, large write-downs and the company’s role as a barometer for the hydroponics and legal cannabis markets.
The episode explores Hydrofarm’s brand portfolio, financial challenges, restructuring efforts and what the company’s struggles might mean for the wider hydroponic sector going forward.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
 
nasdaq, new york stock exchange, london stock exchange

Tuesday Nov 11, 2025

Dr. Russell Sharp explores the role of titanium in plant health; what it is, how it’s used (chelated salts, titanium dioxide nanoparticles, foliar and root applications), and why it’s attracting interest in the biostimulant world.
Although titanium is not an essential nutrient, low doses have sometimes boosted chlorophyll, photosynthesis, nutrient uptake and stress tolerance; effects depend strongly on species, particle form, application method and the plant’s iron and nutrient status.
However, titanium shows a hormetic response: low doses can help but higher doses cause chlorosis, necrosis and growth suppression, with no clear safe thresholds—so the episode warns against using titanium fertilizers and recommends correcting core nutrient imbalances first.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
 
Robocop, suncream, sunscreen, hip replacements, SR-71 Blackbird, Lockheed A-12 archangel, William Gregor, mannacan, 

Monday Nov 10, 2025

Dr. Russell Sharp explores the promise of direct air capture (DAC) as a way to enrich CO2 for hydroponic and greenhouse crops without burning fossil fuels. He discusses a Japanese company (Seibu Gaiken) running successful trials that showed average yield increases of about 20%, and compares DAC to other CO2 sources like breweries and biogas.
The episode highlights key caveats: DAC’s climate benefit depends on clean energy, units are currently large-scale, and they change heat management compared with gas burners. Dr. Sharp invites listener experience and feedback on whether vertical farms or large greenhouses will adopt this technology first.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
 

Sunday Nov 09, 2025

Dr. Russell Sharp explores lamb's lettuce (Valerianella locusta) as an underrated hydroponic crop, highlighting its unique botanical lineage, high nutrient content, and suitability for cold or unheated systems where traditional lettuce and other warm crops struggle.
The episode covers practical benefits—reduced soil contamination, potential premium market value, and successful DWC trials—as well as challenges like delicate leaves, fungal susceptibility, bolting in heat, and the need for optimized nutrition and handling.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
 
Ersatz crops
Tim Davie
 Deborah Turness
Samir Shah
Mary Keen
 
 

Saturday Nov 08, 2025

Host Dr. Russell Sharp discusses Eli Lilly's recent purchase of a greenhouse site in Katwijk, Netherlands, and explores possible links to botanical sourcing and GLP‑1 weight‑loss drugs. He outlines how the $3 billion investment raises questions about future use, including pharmaceutical manufacturing, botanical ingredients, and impacts on horticulture.
The episode also touches on historical examples of plant‑derived medicines, the Nagoya Protocol on sharing benefits from genetic resources, and the wider implications for food demand and greenhouse agriculture. Tune in to hear the latest developments and what to watch for next.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Wegovy (also semaglutide, approved for weight loss), Mounjaro and Zepbound (tirzepatide, a dual-action drug), and Saxenda (liraglutide)
Type 2 diabetes
Whoopi Goldberg, Charles Barkley, Amy Schumer, Serena Williams, Oprah Winfrey, and Elon Musk

Friday Nov 07, 2025

Dr. Russell Sharp discusses cold root stress in hydroponics, how it causes desiccation and nutrient uptake problems, and practical mitigations like raising plants or grafting.
He reviews new research showing increased plant sterols can boost cold tolerance in tomatoes, and teases a follow-up story about Eli Lilly buying a Dutch greenhouse.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
Univerity of Barcelona

Thursday Nov 06, 2025

Dr. Russell Sharp reviews two recent failures in soilless agriculture: Swiss aeroponics firm CleanGreens went bankrupt after a promised CHF 50M investment failed to materialize, and Growy Singapore—an 8,000 m² vertical farm taken over from a US operator—entered liquidation within a year due to high costs and insufficient local investment despite government support.
The episode looks at what went wrong, the impact on employees and technology, and notes Growy's Amsterdam site remains operational. Tune in for a concise breakdown and a preview of tomorrow’s episode on a cold-tolerant tomato variety.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Wednesday Nov 05, 2025

Dr. Russell Sharp examines whether warm‑climate perennials like avocados can be grown economically indoors in cold countries. He reviews a Norwegian research trial using waste heat, cheap hydroelectric power, LED greenhouses, and micropropagation to produce local avocados, and discusses pollination, growth timelines, and energy costs.
The episode weighs the trade-offs between long production times and local quality/supply benefits, shares practical hydroponic lessons, and invites listeners to share unusual crops they’ve grown.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
 
Yara  
Oslo
Jonas Gahr Støre
Erna Solberg 
Jens Stoltenberg
Erling Haaland
Martin Ødegaard
Ole Gunnar Solskjær
John Arne Riise
Svalbard
Agrinos
Nobel Prize
Jo Nesbø
Edvard Munch

Tuesday Nov 04, 2025

Dr. Russell Sharp exposes claims that fertilizers contain 60–90+ elements, showing many listed elements are impossible, radioactive, or toxic and explaining that plants only need a small set of essential nutrients.
He evaluates sea-mineral and rock dust products, warns listeners to question extravagant element lists, and urges asking manufacturers to provide an exact element breakdown.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
 
 
 

Monday Nov 03, 2025

Dr. Russell Sharp examines Sensai Farms, Larry Ellison’s high‑profile hydroponic project in Hawaii, funded with hundreds of millions but hampered by cost overruns, design flaws, failing AI and robots, and unreliable power systems.
The episode covers how these problems drove up production costs, affected local access to affordable produce, and forced Sensai to pivot from large‑scale growing to licensing its technology, raising questions about tech solutions in agriculture.
https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/
 
Tony Blair
Sadiq Khan
Nigel Farage
Kemi Badenoch
 

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