On 10/09/2015 08:31, Chris Hogg wrote:
> Original Weedol contained paraquat, but neat paraquat is poisonous and
> has caused of a number of deaths, such as kiddies finding a bottle in
> a garden shed and drinking it
>
https://en.wikipedia.org/wiki/Paraquat#Toxicity . AIUI paraquat was
> subsequently replaced by diquat in Weedol 2, but even this is
> moderately toxic.
https://en.wikipedia.org/wiki/Diquat
>
> Weedol has now become a family of weedkillers, each aimed at specific
> types of weeds. I imagine these combine more than one active
> ingredient. See for example
http://www.lovethegarden.com/weedol
Yes. It has become a complete nightmare generated by a marketing team
that thought it was a good idea to merge brandnames for weedkillers for
use on broadleaf weeds in lawns with those for *killing* lawns.
I expect some pretty big claims when someone uses the wrong one!
>
> Glyphosate is a good alternative and seems to be displacing
> traditional Weedol. It kills deep-rooted weeds such as dandelions
> etc., while Weedol was only effective on foliage and shallow rooted
> weeds, leaving the roots of the deep-rooted weeds to sprout again. But
> glyphosate acts only slowly, taking a week to ten days to kill the
> weeds, whereas paraquat/diquat acted fairly quickly, over a day or two
> IIRC.
Original paraquat Weedol was pretty effective but very poisonous too!
Glyphosate is the weedkiller of choice for general purpose.
Verdone or now Weedol Lawn Weedkiller (or whatever daft new name they
have given it) as a specific broadleaf herbicide.
There is no decent persistent equivalent of Pathclear any more.
(at least not for the home consumer)
--
Regards,
Martin Brown