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Replies

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  Richard Taylor April 7, 2011 at 2:20pm

  Hi Andy,

  There are not many commercial residual weedkillers left on the market now, but currently we are selling a lot of Bayer Pistol. It is a barrier acting non-selective total herbicide for the control of a wide range of annual and perennial broad-leaved weeds and grasses on soft and gravel surfaces in amenity situations.
  
  Contains 40 g/l diflufenican and 250 g/l glyphosate 
  

  Not sure as to regards of staining, but I am sure the Bayer Technical department could advise you.  

  On the retail side there is Groundclear, offering season long weed control – keeps weeds away for up to 4 months. New Simple Soluble Sachet application – no measuring required. Dissolves quickly. Systemic & residual – kills weeds and roots. Ideal for all tough weed killing.
  
  Active ingredients: Glyphosate, flufenacet, metosulam  

  Hope this helps
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  Dan Frazer Gardening April 7, 2011 at 5:26pm

  It sounds like the slabs may have significant permeable gaps between them though in which case I would use Pistol. If it's an impermeable surface such as close block paving then I won't use it. Large slabs with wide joints draining away quickly yes I will.

   

  The aim is to avoid use if there is any run-off.
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  Andy Lawrence April 7, 2011 at 5:29pm

  Thanks Richard,

   

  I'll take a look
  Richard Taylor said:

  Hi Andy,

  There are not many commercial residual weedkillers left on the market now, but currently we are selling a lot of Bayer Pistol. It is a barrier acting non-selective total herbicide for the control of a wide range of annual and perennial broad-leaved weeds and grasses on soft and gravel surfaces in amenity situations.
  
  Contains 40 g/l diflufenican and 250 g/l glyphosate - for more information click here

  Not sure as to regards of staining, but I am sure the Bayer Technical department could advise you. They can be contacted +44(0)1223 226500.

   

  On the retail side there is Groundclear, offering season long weed control – keeps weeds away for up to 4 months. New Simple Soluble Sachet application – no measuring required. Dissolves quickly. Systemic & residual – kills weeds and roots. Ideal for all tough weed killing.
  
  Active ingredients: Glyphosate, flufenacet, metosulam - for more information click here

   

  Hope this helps
• 

  Colin Hunt April 7, 2011 at 5:30pm

  We use Pistol where paving runs up to factory/office buildings, car park kerb edges and the grotty industrial estate shingled areas and find it will keep weeds away from 3 or 4 months. We are tip toeing around using it on selected block paved areas where run-off is not a problem, but we dont use it on private drives.
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  Andy Lawrence April 7, 2011 at 5:32pm

   

  Just to confirm, sizeable gaps in the slabs where weeds are growing. Don't think run-off should be an issue at either site.
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  Ian Parkes April 10, 2011 at 7:23pm

  hows long does a bottle last? 50 quid any how many applications would i expect out of this please anyone..
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  Dan Frazer Gardening April 10, 2011 at 7:30pm

  Look up the product, it tells you the coverage in m2, and how long it lasts depends on how much area you spray!
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  Ian Parkes April 11, 2011 at 6:24pm

  just a few driveways, says 2,222 m² should last me a while ...
  
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  David Tabberner April 11, 2011 at 7:47pm

  You could consider 'Chikara' (flazasulfuron). It's best applied before weed germination, but can be tank-mixed with glyphosate for later application.

  David
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  Dan Frazer Gardening April 11, 2011 at 8:26pm

  A 5l bottle works out a good bit cheaper... I seem to be using one 5l bottle a season, and 3x5l glyph per season.
  
  Ian Parkes said:

  just a few driveways, says 2,222 m² should last me a while ...