Ed Rosenthal

Ed Rosenthal

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      2 products
      Ed Rosenthal's Zero Tolerance Aerosol 699ml — Organic Herbal Mite, Thrip & Fungus Gnat Spray
      Ed Rosenthal's Zero Tolerance Aerosol 699ml — Organic Herbal Mite, Thrip & Fungus Gnat Spray
      $29.95
      Ed Rosenthal's Zero Tolerance Concentrate by Ed Rosenthal — Organic Herbal Concentrate for Thrips, Mites & Fungus Gnats
      Ed Rosenthal's Zero Tolerance Concentrate by Ed Rosenthal — Organic Herbal Concentrate for Thrips, Mites & Fungus Gnats
      Ed Rosenthal's Zero Tolerance Concentrate by Ed Rosenthal — Organic Herbal Concentrate for Thrips, Mites & Fungus Gnats
      from $54.95
      Brand — Horticulture & Pest Management

      Ed Rosenthal — Grower Books & Pest Sprays in Australia

      Ed Rosenthal is one of the most recognised names in modern horticulture. Four decades of cultivation experience, a stack of reference books that have trained a generation of growers, and a product line built from real grow-room problems. The Grow Guys ships the Ed Rosenthal range Australia-wide, free shipping over $499*.

      Why growers rate Ed Rosenthal

      Forty years of cultivation
      Ed didn't read about growing — he's done it since the 1970s. Every product and every chapter comes from that.
      Educator first
      His handbooks are how most serious growers learned the craft. Plain writing, proven technique, no theory-for-theory's-sake.
      Products built from real problems
      Zero Tolerance and the rest of the line came out of fixing issues in working grow rooms — not a marketing department.
      No hype, no shortcuts
      Ed's reputation is built on telling growers what works and what doesn't. The products back the books, and the books back the products.

      The Ed Rosenthal story

      Few names carry more weight in horticultural education than Ed Rosenthal. Starting out as a grower, he built his reputation writing honest, practical cultivation columns that became the "Ask Ed" reference growers trusted when no one else was willing to put real technique on the page.

      That work turned into books — handbooks that have sold millions of copies and are still the first thing experienced growers recommend to beginners. Alongside the publishing side, Ed developed a product range focused on the unglamorous stuff that actually makes a difference in a working grow room: pest control that works, tools that last, and instructional material that doesn't waste your time.

      The Grow Guys stocks Ed Rosenthal products because they sit in the same lane we do — expert knowledge, no fluff, built for growers who take the craft seriously.

      What Ed Rosenthal makes

      Grow Guys Tip
      Zero Tolerance works best as part of a rotation — alternate it with a different mode of action every few sprays so pests don't build resistance. Apply early in the grow, late in the afternoon with the lights off, and never in the final two weeks before harvest.

      Ed Rosenthal FAQ

      Is Ed Rosenthal available in Australia?
      Yes. The Grow Guys ships the Ed Rosenthal range Australia-wide from our Tasmanian warehouse, with free shipping over $499*.
      What does Zero Tolerance actually do?
      It's a plant-oil-based foliar spray that controls mites, aphids, whitefly, thrips and other common soft-body pests. It works on contact and breaks down fast, so it suits indoor grows where harsh residues aren't an option.
      Can I use Zero Tolerance on flowering plants?
      Yes, but use it early in flower only. Stop spraying at least two weeks before harvest to keep residues off finished product and protect flavour and aroma.
      Why is Ed Rosenthal considered an authority?
      Forty-plus years of hands-on cultivation, dozens of published titles, and a writing career built on telling growers the truth about what works. His books are standard references in the horticultural industry.
      Shop Ed Rosenthal in Australia
      Pest sprays and grower references — free shipping over $499*
      Shop Plant Washes Browse Pest Management
      Growers First, Retailers Second

      Welcome to The Grow Guys

      We built The Grow Guys from the soil up — well, coco and perlite. Before we sold gear, we bought it, ran it, and learned the hard way what's worth the money and what ends up in the shed. That's the filter everything on our shelves passes through. No sales scripts, no rebadged junk, no telling you what you want to hear. Just gear we'd run ourselves and advice from people who actually grow. Chasing higher yields, tighter flowers, or your first harvest? You're in the right place.

      Meet The Grow Guys

      FAQs

      Calculated at checkout by weight and destination. Free shipping over $499*.

      Order by 2pm and it ships the same business day from Invermay, Tasmania.

      500+ products across 40+ brands, every one filtered through 14 years of real growing experience. Shipping Australia-wide.

      30-day change-of-mind returns on unopened, unused products. A 10% restocking fee applies and return shipping is at your cost.

      Call, email, or walk into the Invermay shop. You'll get a grower on the other end, not a script.