Hydroponics Daily

In this episode Dr. Russell Sharp explains how dosatrons work and compares practical alternatives for run‑to‑waste hydroponic systems, including Venturi injectors, electric metering pumps, and simple fertigation tanks. He outlines the pros and cons of each option — cost, accuracy, power needs, maintenance, and scale — and covers considerations about recirculation, environmental impact, and regulatory risk. Ideal for growers choosing the right dosing method for medium to large greenhouse operations.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Jean-François Hannequart — Dosatron International

Eric Roudaut — Dosatron International

Philippe Martin — Dosatron International

Pascal Lacroix — Dosatron International

David Hull — Dosatron USA

Bill Toler — Hydrofarm

John Lindemann — Hydrofarm

Terry Fitch — Hydrofarm

Peter Wardenburg — Hydrofarm

Gaby Miodownik — Netafim

Ran Bar-Tal — Netafim

Eliezer Zilberman — Netafim

Poul Due Jensen — Grundfos

Anne Grønbjerg — Grundfos

Morten Bach Jensen — Grundfos

Mikael Geday — Grundfos

Bent Jensen — Grundfos

Jeremy Brown — Iwaki America

John Miersma — Iwaki America

Andreas Kleimann — Iwaki Europe

Marco Gandolfi — SEKO

Davide Galli — SEKO

Roberto Mantovani — SEKO

Carlo Pizzocaro — SEKO

Jim Lauria — Blue-White Industries

Brian E. Cooney — Blue-White Industries

Paul Van der Wal — Autogrow Systems

Chris White — Autogrow Systems

Shaun Whiteman — Autogrow Systems

Scott Peters — Growlink

Ted Tanner — Growlink

Ryan Boyle — Growlink

Ross Sherwood — Bluelab

Darryn Keiller — Bluelab

Colin Jennings — Bluelab

John Kinsella — Hanna Instruments

Oscar Llobet — Hanna Instruments

Mark Johnson — Stenner Pump Company

Kevin Perry — Stenner Pump Company

Paul Riley — Walchem

Kevin McDonnell — Walchem

Dan Myers — Milton Roy (LMI)

Thomas Pfitzner — Milton Roy

Maurizio Bianchini — EMEC

Marco Bernardini — EMEC

Giorgio Bassi — Doseuro

Stefano Bertolini — Doseuro

Yossi Tal — Tefen

Eyal Cohen — Tefen

Hanu Pappu — Jain Irrigation

Anil Jain — Jain Irrigation

Naresh Patel — Jain Irrigation

Harmen van der Meer — Priva

Rick Van Der Zanden — Priva

Erik Jansen — Priva

Ben Nijland — Argus Controls

Rick Mosher — Argus Controls

Pat McIntyre — Argus Controls

Don Janssen — AmHydro

Gary Hickman — AmHydro

Steven Bacon — CropKing

Mark Doherty — CropKing

Brian Young — General Hydroponics

Ron Wold — General Hydroponics

James Thompson — Netafim USA

Steve Bradley — Netafim USA

Mike McDonald — Dosatron USA

Tom Ball — Dosatron USA

Chris Higgins — Hort Americas

Jeff Timmons — Hort Americas

Scott Lowry — Current Culture H2O

Derek Ruschmann — Current Culture H2O

Mark Tracey — Nutriculture

Graham Smith — Nutriculture

Andrew Turnbull — HydroGarden

Lee Stephenson — HydroGarden

Nick Brook — Pure Hydroponics

Oliver Edwards — Pure Hydroponics

Matthew Hay — Autogrow Systems

Ben Parsons — Autogrow Systems

Chris Higgins — Lumigrow

Ryan Donovan — LumiGrow

James Eaves — Rivulis

Itzhak Nir — Rivulis

Moshe Ben-David — Rivulis

Daniel Grant — Irritec

Marco Sironi — Irritec

Yaron Dagan — Bermad

Rami Levi — Bermad

Avi Peleg — Bermad

Paul Shed — Nelson Irrigation

Wade Jones — Nelson Irrigation

Simon van der Walt — Greencube

Pieter van der Merwe — Greencube

Steve Mallory — Autogrow USA

Mark DeKoster — GrowControl

Daniel Stacey — GrowControl

Jim Pantaleo — Xylem

Patrick Decker — Xylem

Kenji Sato — Takemura Electric Works

Hello there, and welcome back to Hydroponics Daily, your go-to podcast for everything soilless cultivation. I am your host, Dr. Russell Sharp, the founder of Eutrema Limited, a company that makes truly unique fertilizers, biostimulants, and biopesticides that you won't find anywhere else. The technology is completely unique. And today, the topic of the podcast is what I would do if I was faced with a virus in my crop. Specifically a crop where you want to protect the genetic material and you can't just throw the plants away often when we say when you've got a virus the first thing you should do is just destroy all plant material but what if you've got a strain a variety a cultivar that only you've got or is protected or is endangered or you need it for a breeding program or something like that and you need to get rid of the virus what are you going to do you can't give plants tamiflu that technology is not available you can't just wait for their immune system to fight the virus off because they don't have immune systems and so there's only really one option that i'm aware of and that's heat treatment so you when you're planting out cuttings tubers bulbs or seeds immersing them in hot water for a defined period can help with virus control. So we're talking about temperatures of 45 to 55 degrees Celsius. So you wouldn't keep plants, not many plants would live at that sort of temperature, they would soon die off, especially unless the humidity was really, really high. But the duration of which you give this treatment is only like 10 to 60 minutes. So in crops that's regularly, perennial crops, herbaceous perennial crops where they regularly suffer from viruses like sugar cane, sweet potato, banana, even grape vines and some ornamentals, you can do this and with success and control viruses. And you're best obviously doing it with smaller plants because smaller the plants, the more effective the treatment will be because of just the temperature profiles and things like that. Now obviously there's a big challenge there it could be phytotoxic it could just kill your plants from the heat but with a bit of experimentation you could find what is the sweet spot for your particular plant and in fact if I was going to do this if I had a plant that I needed to control the viruses I would do it until the plant breaks so I would get maybe 100 cuttings from a virus infected plant and I'd treat 10 at. What did I say the temperature was, 45 degrees Celsius for 10 minutes, and then all the way up to 10 that would be treated at 55 degrees Celsius for 60 minutes. No idea what that is in Fahrenheit, apologies for American listeners, but it's pretty warm, it's sort of like steam room temperature. So I would do a range and find out at what point did the plants die, and just go slightly below that, and really really stress it, because you don't want any virus particles in that new plant because it will be a source of infection and you will not get a chance to do this twice really so obviously seeds is the easiest but very rarely you won't go on to do that it's after that tubers something dormant a bulb they're going to be much more resistant much more tolerant of those high temperatures whereas a cutting is probably going to be the most sensitive but i would do it until it breaks if you're prepared to lose a few cuttings you could do it on unrooted cuttings and rooted cuttings i'd probably start with rooted cuttings see if you could get away with it because, severely stressing a cutting that's not rooted and then trying to get it to root you know you're not you you're in for a bad case there because you really struggle because it's all the cells are going to be weak and stressed from that heat treatment so i do it on rooted cuttings, newly rooted cuttings, not too much growing media around them. Okay, so that would be my. My suggestion, what are the success rates? If you're doing it on seeds, the sort of typical virus elimination you can achieve is 60 to 90%. Whole plant cure rate, typically around 50%. So you may need to screen the plants and quarantine and destroy any plants that are not completely successful. Micropropagation as well. There's often a technique that's used in micropropagation because you can, these plants are so much smaller than a normal cutting than a normal plant that you can quickly get them to the temperature and then back down again quickly whereas a a large corm or bulb or tuber you could think you can get in the center of that tuber to 50 degrees celsius means much longer and the outside temperature will have to be a lot warmer so so yeah that's probably going to be lower success rate there what else can we say this is sort of the term is thermotherapy by the way so what else can we say about it you can do it on whole plants large plants but you would probably need a grow room dedicated to it with a sort of a temperature of high 30s probably early 40s for two to six weeks that's a lot of heat if you're not in a tropical or arid area but you've got fruit trees large fruit trees ornamentals that are just infected then it might be worth it for targeting systemic viruses and preserving the whole plant structure rather than going back down to cuttings and starting it all over again. The heat stress will reduce the vigour and survival of the plants. You'll probably get some scorching on the leaves and things like that. So if it's an ornamental plant, you might reduce that. The success rates for whole plant thermotherapy are lower. So 30 to 70% virus elimination. And just because the temperatures are lower, so the virus isn't exposed to such a high temperature. And maybe this is why, you know, when you get a virus, like a cold or a flu, your body heats up because viruses don't like high temperatures. But, you know, tropical plants still get viruses. So I'd imagine this is harder to do on tropical plants and easier to do on temperate plants, because tropical plants are going to be exposed to these high temperatures anyway, and the viruses will be adapted to them. It will depend on the virus and its genetics, because even though they're not alive, they have genetics, they have genes, whether that's RNA or DNA. So the virus biology will have an effect and the host tolerance the ability to withstand those high temperatures will be key and the precise treatment i would probably do a water bath would probably be the easiest way to do it with cuttings now a water bath you can set to a set temperature and and dunk them in what's that thing they use in kitchens is it a bain marie when they when they're cooking steaks very precise temperatures you could potentially use one of those as well and or Or if you fail in that, a pot on a stove or something in an oven, some water in an oven that could get the plants to 50 degrees Celsius uniformly. So you don't want to put them in dry heat in an oven because they're exposed to all sorts of temperatures there. Definitely don't just put them in an oven. Definitely use a water bath for cuttings and things like that. So that would be my top tip. Just sort of Google there. You can pick up a Bain-Marie for like 100, 140 pounds. So that's not a lot considering the value if you're going to go to these lengths then the value of these plants must be considerable if you're going to spend the time and effort to try and eliminate viruses from them and potentially you know with virus testing getting better and better and more what's the word i'm looking for accessible you could potentially have a nice little hydroponic. Business selling certified virus-free heat treated cuttings that could be one of the things if you if in your industry cuttings there's a there's a business is selling cuttings and you're looking for a unique selling point then potentially you could say our product our cuttings are all heat treated and checked and checked for viruses before they leave the nursery and that could be a really good small little venture little bootstrapped hydroponic company to get you going up and running, selling, cuttings, and propagation material. Anyway, that's been Hydroponics Daily for today. If you found it interesting, please do give us an Apple podcast review because it does help spread the word of hydroponics with the wider horticultural gardening community and scientific community. If you're not an Apple, just make sure you follow the podcast so you don't miss an episode. We've got about 14 episodes left of 2025. I've done an episode every day,  at the very least check out www.Eutrema.co.uk for all your amazing. Fertilizers, biostimulants and biopesticides. None of our products control viruses because you can't control a virus. You have to either destroy your plants or heat treat them. You can use insecticides to prevent the spread of aphids, which transfer the viruses. We don't sell insecticides, we sell an insecticide or soap and that's about it. So yeah, that's been Hydroponics Daily for today. Thank you very much for listening and I'll see you again tomorrow.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Roger Hull — John Innes Centre

Dr. Russell Sharp explores the growing interest in perennial arable crops like Kernza, perennial rice and sorghum, explaining their environmental benefits, current commercial status, and the agronomic challenges they face.

The episode also discusses breeding and gene-editing opportunities to improve yield and resilience, and considers how perennial grains might fit into hydroponic and niche high-value markets.

https://eutrema.co.uk/

Maqsood Ali Wagan — Sindh Agriculture University

Farhan Ali Wagan — Sindh Agriculture University

Andrius Grigas — Lithuanian Research Centre for Agriculture and Forestry

Dainius Steponavičius — Lithuanian Research Centre for Agriculture and Forestry

Indrė Bručienė — Lithuanian Research Centre for Agriculture and Forestry

Ričardas Krikštolaitis — Lithuanian Research Centre for Agriculture and Forestry

Tomas Krilavičius — Lithuanian Research Centre for Agriculture and Forestry

Aušra Steponavičienė — Lithuanian Research Centre for Agriculture and Forestry

Dainius Savickas — Lithuanian Research Centre for Agriculture and Forestry

Alejandro Perdomo López — Reaseheath College / University Centre

Adrienn S. — Hungarian University of Agriculture and Life Sciences

S. Upreti — ICAR–Indian Agricultural Research Institute

Monica Dutta — Indian Institute of Information Technology

Deepali Gupta — Indian Institute of Information Technology

Sumegh Tharewal — Indian Institute of Information Technology

Deepam Goyal — Indian Institute of Information Technology

Jasminder Kaur Sandhu — Indian Institute of Information Technology

Manjit Kaur — Indian Institute of Information Technology

Ahmad Ali Alzubi — Prince Sattam bin Abdulaziz University

Jazem Mutared Alanazi — Prince Sattam bin Abdulaziz University

Sreehitha Padala — St. Francis College for Women

Saniya Vaishnav — St. Francis College for Women

Revathi Saravanan — St. Francis College for Women

Basanti Chintapalli — St. Francis College for Women

Sandeep Indurthi — Assam Agricultural University

Ira Sarma — Assam Agricultural University

Chereddy Maheswarareddy — Assam Agricultural University

M. R. Islam — Bangladesh Agricultural University

M. A. Rahman — Bangladesh Agricultural University

S. K. Paul — Bangladesh Agricultural University

A. K. Singh — ICAR–Indian Agricultural Research Institute

R. K. Yadav — ICAR–Indian Agricultural Research Institute

P. K. Singh — ICAR–Indian Agricultural Research Institute

J. L. Minhas — ICAR–Central Soil Salinity Research Institute

V. P. Singh — ICAR–Central Soil Salinity Research Institute

H. R. Sharma — Punjab Agricultural University

S. S. Dhillon — Punjab Agricultural University

M. A. Al-Khatib — King Saud University

A. A. Al-Harbi — King Saud University

N. H. Batool — University of Agriculture Faisalabad

M. A. Nawaz — University of Agriculture Faisalabad

Y. S. Kim — Seoul National University

J. H. Lee — Seoul National University

T. Matsuo — University of Tokyo

K. Yamamoto — University of Tokyo

P. J. Botha — University of Pretoria

M. J. van der Merwe — University of Pretoria

R. N. Singh — Banaras Hindu University

S. K. Verma — Banaras Hindu University

Alice Withrow — Purdue University

Dr. Russell Sharp explains how Dosatrons (water-powered dosing pumps) mix concentrated fertilizer like Gold Leaf/Liquid Gold into fertigation systems, describing the piston-driven mechanism, proportional injection, and why it maintains a constant concentration despite flow changes.

The episode covers practical setup tips for off-grid hydroponics — solenoids, drippers, solar pumps, and how a Dosatron enables accurate, electricity-free dosing, along with limitations (not for powders, pressure loss, very viscous or abrasive chemicals) and a brief mention of Venturi injectors.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Dr. Russell Sharp of Hydroponics Daily breaks down the truth behind "cut-and-come-again" vegetables and viral social media hacks, explaining which crops genuinely regrow and which claims are misleading.

Learn which leafy herbs and greens can be harvested multiple times, why most bulky vegetables won’t produce a marketable second crop, and when starting fresh is a better option for consistent yields.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Holly Wolf - Wolf of the Wild

Ivy Vernalis 

Farmer Belle 

curlygardens

rock.gardener 

TheRoseGarden

Becky Houzé

Dr. Russell Sharp explores advanced preservation methods for flower crops; from freeze-drying and glycerin sap replacement to citric acid treatments used for hops,cand how these techniques can create premium, display-ready products for shops, dispensaries, and e-commerce.

This episode offers practical ideas for ornamentals and specialty growers looking to add high-value, long-lasting products to their lineup.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Ryan Hopkins — Yakima Chief Hops

Karl VanEvanHoven — Yakima Chief Hops

Bryan Pierce — Yakima Chief Hops

Denis Gayte — Yakima Chief Hops

Missy Raver — Yakima Chief Hops

Cesar Silva — Yakima Chief Hops

Aric Gamache — Yakima Chief Hops

Dean Monshing — Yakima Chief Hops

Salvador Benitez — Yakima Chief Hops

Chuck St. Mary — Yakima Chief Hops 

Drew Gaskell — Yakima Chief Hops

Jason Champoux — Yakima Chief Ranches

Jason Perrault — Yakima Chief Ranches

Tom Davis — John I. Haas

Stephanie Conrad — John I. Haas

Alex Barth — John I. Haas

Stephan Barth — BarthHaas

Alexander Barth — BarthHaas

Oliver Bergner — BarthHaas

Peter Hintermeier — BarthHaas 

Prof. Dr. Mirja Steinkamp — BarthHaas

Dr. Philipp Ramin — BarthHaas

Thomas Raiser — BarthHaas

Nic Donald — BarthHaas X

David Kerr — BarthHaas X

Ian Clarke — BarthHaas X

Kevin McCarry — BarthHaas X

Enrico Prenni — BarthHaas X

Sarah Goddard — BarthHaas X

Maria Bailey — BarthHaas X 

Jim Solberg — Indie Hops

Roger Worthington — Indie Hops

Matt Sage — Indie Hops

Gayle Goschie — Goschie Farms

Glenn Goschie — Goschie Farms

Gordie Goschie — Goschie Farms

John Coleman — Coleman Agriculture

Brandon Davidson — BC Hop Farms

Ben Smith — B & D Hop Farms

Dave Smith — B & D Hop Farms 

Blair Stewart — New Zealand Hops

Glynn Rowell — New Zealand Hops

Devin Biondi — New Zealand Hops

Kerry Sutcliffe — New Zealand Hops

Dr. Ron Beatson — New Zealand Hops

Owen Johnston — Hop Products Australia

Chris Price — Hop Products Australia

Grace Irwin — Hop Products Australia

Paul Corbett — Charles Faram

Will Rogers — Charles Faram

Dr. Russell Sharp outlines the key 2026 dates affecting hydroponic growers (equinoxes, longest day) and recommends major trade shows and conferences worldwide — from IPM Essen and Fruit Logistica to Greentech Amsterdam, Indoor AgCon and MJBizCon.

He also highlights UK and crop-specific events, tips for timing indoor grows, and invites listeners to suggest other shows for an updated diary.

Tue–Fri 27–30 Jan 2026 — IPM ESSEN (Essen, Germany) IPM ESSEN

Wed–Thu 11–12 Feb 2026 — Indoor Ag-Con (Las Vegas, USA) Indoor Ag-Con+1

Tue–Thu 9–11 Jun 2026 — GreenTech Amsterdam (RAI Amsterdam) GreenTech

Sat–Sun 8–9 Aug 2026 — UK Hydro Expo (Somerset) (tickets noted as available from 1 Jan 2026 on their site) Uk Hydro Expo+1

Wed–Thu 2–3 Sept 2026 — Four Oaks Trade Show (Cheshire, UK) fouroaks-tradeshow.com

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Simona Bassu — Technical University of Munich

Sebastian Eichelsbacher — Technical University of Munich

Francesco Giunta — University of Sassari

Rosella Motzo — University of Sassari

Corinna Dawid — Technical University of Munich

Martina Gastl — Technical University of Munich

Michael Schloter — Helmholtz Zentrum München

Katharina A. Scherf — Leibniz Institute for Food Systems Biology at the Technical University of Munich

Stefan Hör — Technical University of Munich

Yuri Pinheiro Alves De Souza — Helmholtz Zentrum München

Stefanie Schulz — Helmholtz Zentrum München

Timo D. Stark — Technical University of Munich

Volker Mohler — Bavarian State Research Center for Agriculture (LfL)

Senthold Asseng — Technical University of Munich

Mahmoud A. Abdelhamid — Ain Shams University

Sobhy M. Mahmoud — Ain Shams University

Zeinab M. Hendy — Ain Shams University

Mohamed K. Abou El-Nasr — Ain Shams University

Zhao Zhang — China Agricultural University

Monica Dutta — Chitkara University

Deepali Gupta — Chitkara University

Sapna Juneja — KIET Group of Institutions

Saleh AlNadhari — King Saud University

Samir Brahim Belhaouari — Hamad Bin Khalifa University

Wenyi Liu — Hunan Agricultural University

Zhihua Zhang — Changde Tobacco Company of Hunan Province

Bin Zhang — Hunan University of Science and Engineering

Yi Zhu — Changde Tobacco Company of Hunan Province

Chongwen Zhu — Changde Tobacco Company of Hunan Province

Chaoyong Chen — Changde Tobacco Company of Hunan Province

Fangxu Zhang — Changde Tobacco Company of Hunan Province

Feng Liu — Changde Tobacco Company of Hunan Province

Jixiang Ai — Changde Tobacco Company of Hunan Province

Wei Wang — Changde Tobacco Company of Hunan Province

Wuyuan Kong — Changde Tobacco Company of Hunan Province

Haoming Xiang — Changde Tobacco Company of Hunan Province

Weifeng Wang — Changde Tobacco Company of Hunan Province

Daoxin Gong — Hunan Agricultural University

Delong Meng — Hunan University of Science and Engineering

Li Zhu — Changde Tobacco Company of Hunan Province

Taehyun Roh — Texas A&M University

Laura Ashley Verzwyvelt — Houston Methodist Hospital

Anisha Aggarwal — Texas A&M University

Raj Satkunasivam — Houston Methodist Hospital

Nishat Tasnim Hasan — Texas A&M University

Nusrat Fahmida Trisha — Texas A&M University

Charles Hall — Texas A&M University

Ponkamon Ruploet — Kalasin University

Kathanyoo Kaewhanam — Kalasin University

Sayan Phansoomboon — Kalasin University

Anan Piriyaphattarakit — Thailand Institute of Science and Technological Research

Amina Haider — Universiti Malaya

Muhammad Faisal — Universiti Malaya

Laiq Hasan — Universiti Malaya

Syed Danish Yousaf — COMSATS University Islamabad

Ali Raza — COMSATS University Islamabad

Muhammad M. Umer — COMSATS University Islamabad

Smart Idumoro Samuel — Landmark University

Oluwaseun Temitope Faloye — Federal University Oye-Ekiti

Abiodun Afolabi Okunola — Landmark University

Adeolu Adediran — Federal University Oye-Ekiti

Viroon Kamchoom — King Mongkut’s Institute of Technology Ladkrabang

Natdanai Sinsamutpadung — King Mongkut’s Institute of Technology Ladkrabang

Polina Kuryntseva — Kazan (Volga Region) Federal University

Nataliya Pronovich — Kazan (Volga Region) Federal University

Gulnaz Galieva — Kazan (Volga Region) Federal University

Polina Galitskaya — Kazan (Volga Region) Federal University

Svetlana Selivanovskaya — Kazan (Volga Region) Federal University

Alessandro Esposito — University of Palermo

Alessandra Moncada — University of Palermo

Filippo Vetrano — University of Palermo

Eristanna Palazzolo — University of Palermo

Caterina Lucia — University of Palermo

Alessandro Miceli — University of Palermo

Zoe Karachaliou — University of Thessaly

Ioannis Naounoulis — University of Thessaly

Nikolaos Katsoulas — University of Thessaly

Efi Levizou — University of Thessaly

Manlio Fabio Aranda Barrera — Universidad Panamericana

Hiram Ponce — Universidad Panamericana

Mino Sportelli — ISTI-CNR

Davide La Rosa — ISTI-CNR

Antonino Crivello — ISTI-CNR

Dunia Pineda-Medina — ISTI-CNR

Manlio Bacco — ISTI-CNR

Paolo Barsocchi — ISTI-CNR

Kateryna Vasylkovska — Central Ukrainian National Technical University

Mykola Kovalov — Central Ukrainian National Technical University

Oleksii Vasylkovskyi — Central Ukrainian National Technical University

Daria Michailova — Kropyvnytskyi Agrarian Professional College

Angélica Nohemí Cardona Rodríguez — Universidad Autónoma de Zacatecas

Carlos Alberto Olvera-Olvera — Universidad Autónoma de Zacatecas

Santiago Villagrana-Barraza — Universidad Autónoma de Zacatecas

Ma. Auxiliadora Araiza-Ezquivel — Universidad Autónoma de Zacatecas

Diana I. Ortíz-Esquivel — Universidad Autónoma de Zacatecas

Luis Octavio Solís-Sánchez — Universidad Autónoma de Zacatecas

Germán Díaz-Flórez — Universidad Autónoma de Zacatecas

Jeongwook Heo — Rural Development Administration (National Institute of Agricultural Sciences)

Jeonghyun Baek — Rural Development Administration (National Institute of Agricultural Sciences)

Zarin Subah — University of Idaho Boise

Dr. Russell Sharp discusses the struggle of the UK and European hydroponic sector, focusing on recent enforcement in the Netherlands over continuous in-line dosing of hydrogen peroxide. He explains why regulators flagged the practice, the science behind peroxide breakdown, and his frustration with overly rigid enforcement.

Russell also offers practical advice: avoid continuous peroxide dosing to protect roots and yields, keep systems clean, and use peroxide sparingly. He reflects on the wider impact of regulation on innovation and shares how his company adapts to EU rules.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Matthew Appleby — Horticulture Week

Sally Drury — Horticulture Week

Gavin McEwan — Horticulture Week

Clare Foggett — The English Garden

Vivienne Hambly — The English Garden

Sue Fisher — BBC Gardeners’ World Magazine

Emma Crawforth — BBC Gardeners’ World Magazine

Kevin Smith — BBC Gardeners’ World Magazine

Miranda Janatka — BBC Gardeners’ World Magazine

Kay Maguire — BBC Gardeners’ World Magazine

Daniel Haynes — Gardeners’ World

Catherine Mansley — Gardeners’ World

Sonya Patel Ellis — Gardeners’ World

Kate Bradbury

Greg Loades

Veronica Peerless — Gardens Illustrated

Kate Jacobs — Gardens Illustrated

Tim Richardson — Gardens Illustrated

Alys Fowler

Jane Perrone

Alexandra Campbell

Alice Vincent

Alice Lascelles — Financial Times

Tom Heap — BBC

James Wong

Val Bourne

Anne Swithinbank

Bob Flowerdew

Mark Diacono

Cleve West

Sarah Raven

Annie Guilfoyle

Andrew Timothy O’Brien

Jonathan Buckley

Tamsin Hope Thomson

Nic Wilson

Kim Stoddart — Amateur Gardening

Alan Titchmarsh

Monty Don

Carol Klein

Joe Swift

Pippa Greenwood

Paul Green

Noel Kingsbury

Marian Boswall

Jack Wallington

Alice Bowe

Jane Courtier

Rachel de Thame

Lucy Chamberlain

Carolyne Roehm

Noel Kingsbury

Nigel Slater — The Observer

Anna Pavord

Penelope Lively

Beth Chatto

Christopher Lloyd

Vita Sackville-West

Gertrude Jekyll

Margery Fish

Dan Pearson

Tom Stuart-Smith

Armitage Shanks (No, wrong)

Toby Buckland

Fergus Garrett

Sarah Cuttle

Lia Leendertz

Matthew Biggs

Peter Seabrook

Bunny Guinness

Alice Doyle

Jamie Butterworth — RHS

Guy Barter — RHS

Helen Yemm — The Telegraph

Jane Moore

Debora Robertson

Mary-Kay Wilmers

Emma Townsend

Jessica Damiano — Associated Press

Adrian Higgins — The Washington Post

Margaret Roach

Ken Druse

Jeff Lowenfels

Doug Oster — Pittsburgh Post-Gazette

Maria Rodale

Danielle Sherry — Fine Gardening

Jeremie Fant — Fine Gardening

Caitlin Boyle — Fine Gardening

Erin L. Schanen — Fine Gardening

Lisa Negri — Fine Gardening

Benjamin Vogt

Roy Diblik

Kelly D. Norris

Nancy J. Ondra

Allan Armitage

Piet Oudolf

Noel Kingsbury

Michael Pollan

Joe Lamp’l

P. Allen Smith

Dr. Russell Sharp discusses e-commerce strategies for hydroponic businesses, advising against competing in commodity leafy greens and recommending niche, high‑value preserved products like freeze‑dried herbs, pickles, and gourmet fermented goods.

He outlines marketing channels (social ads, trade shows, brand storytelling), logistics considerations (cold chain vs preserved goods), alternatives like ornamentals and cut flowers, and cautions about high costs and platform pitfalls such as selling on Amazon.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Greens For Good

OnlyHydroponics

Max Green Farms

Gabbar Farms

LEAFY (Leafy Scot)

Oasis Hydroponics

Sunway XFarms

Vexotics

Dizon Farms Delivers

Biogrove

Foodstories

Kaze Living

ElaGreens

GetBlok Farms

Dr. Russell Sharp explains why bootstrapping is the best route for many hydroponic ventures, emphasizing unique products, testing market demand, and protecting cash flow.

He warns against offering customer credit—suggesting pro forma payments and using strong order books to secure bank loans if scaling is needed—plus practical tips for long-term sustainability.

https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/

Geoffrey Guy

Brian Whittle

Justin Gover

Tom Whettem

Adam Windish

Paul Kenward

Ben Langley

Gabriel Newman

Sam Ashton

Jon Robson

Maximillian White

Mason Soiza

Oliver Soar

Scott Stephen

Peter Zownir

Graham Woodward

Rupa Shah

Dr Susan Jane Clenton

Frances Crewdson

Tom Gray

Mike Morgan-Giles

Nick Pateras

Ricardo Geada

Dr Sunil Arora

Damien Bove

Sam Cannon

Hamish Clegg

Matt Hughes

James Leavesley

Dr Shanna Marrinan

Paul North

Sonal Patel

Tony Reeves

Clare Holliday

James Duckenfield

Adam George

Martin Dickie

Richard Reed

Christian Angermayer

Maria Raga

Irina Elena Haivas

Sophia Bendz

Fiona Pathiraja

Michelle Tempest

Leafy Tunnel

Salica

Measure 8 Venture Partners

Casa Verde Capital

Deepbridge Capital

Kindred Capital