06 Nov REVIEW: Amgrow Organix Weed Blitz 1L ready to use

Those of you pining  for a registered organic weed control spray for the home market are in luck with this latest offering from the people at Amgrow.


Amgrow Organix Weed Blitz 1L ready to use – $14.95.


The active ingredient of this herbicide is pine oil, extracted from both Australian and New Zealand pine. It works by stripping the coating from leaves, stems and even seeds to which it is applied,  causing the collapse of the cells and thus the plant itself. It is wholly plant-derived and certified organic. If you understand it’s action you can now understand why it would not be the best solution to bulbous or woody perennial weeds which would burn-off then most-likely recover. It does, however, work an absolute treat in killing juvenile perennial as well as most annual weeds.

The Verdict

The first thing I noticed when testing this product was the smell. It smells great, not something generally associated with garden sprays. I found it worked extremely effectively at desiccating weeds quickly even on overcast, cooler days. The effect can be noticed almost instantaneously with weeds often curling over within the hour.

My only negative would be that it is currently only available in a ready to use pack does make it a bit on the expensive side for regular use so I hope a concentrate pack is in the works.



Director at Hortiman
Catch up on the latest garden trends, find out what's hot and learn how to care for your garden, plus a bit of fun with Hortiman.

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  • Ally @ Om Nom Ally
    Posted at 14:02h, 11 December Reply

    I’ve been looking everywhere for this product this week – and no luck! None of the major stockists of gardening gear near me sell it (or have heard of it). Any hints on where I can find Weed Blitz?

    • Matthew Carroll
      Posted at 16:56h, 11 December Reply

      Hi Ally. Here is the Amgrow customer service phone number 1800 AMGROW (1800 264 769). They should be able to notify you of your closest stockist. Good luck!

      • Alison Murray
        Posted at 18:23h, 11 December Reply

        Thankyou Matthew, I tried ringing earlier today and couldn’t get through. It’s getting close to Christmas so I suppose they could either be flat out, or conversley winding down for the holidays. Shall try again tomorrow as I really want to try this product.
        Thanks and love the site 😀

  • Cathy Jensen
    Posted at 09:29h, 07 April Reply

    The only thing this product blitzed was my wallet. It does turn the leaves on the top of the weeds brown but does not kill the base or the roots. I used the product during a dry, sunny week on various weeds and grass and found it uniformly ineffective at killing any of them. A complete waste of money, back to roundup for me.

    • Matthew Carroll
      Posted at 20:39h, 08 April Reply

      Hi Cathy. True, this would not be a good choice for killing-off grasses etc. It is mainly useful for annual soft weeds or juvenile non-bulbous perennial weeds, not hardy perennial weeds that will likely scorch then regrow.

  • Mrs. Annette Berne
    Posted at 13:29h, 09 November Reply

    I purchased Amgrow, Organix pine oil based weed killer as I have pets and didn’t want to use poisons. I found it fantastic, couldn’t believe how good it was as it worked almost straight away within an hour or so. I will be using it all the time as I have lots of weeds in my pavers, which are very hard to remove without it. Thank you Amgrow and Organix. A. Berne. Sydney.

  • Mrs. Annette Berne
    Posted at 13:30h, 09 November Reply

    Just want to let everyone know that you can purchase it at Masters Hardware at Northmead, N.S.W appx $14.00. 1L.

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