On 02/07/2012 18:14, Spider wrote:
On 02/07/2012 17:58, Sacha wrote:
On 2012-07-02 17:49:46 +0100, Stewart Robert Hinsley
said:

In message , Jake
writes
On Mon, 02 Jul 2012 14:39:27 +0100, Spider wrote:

This is, I believe, the identity of the weed which perniciously
invades
part of my garden.

http://en.wikipedia.org/wiki/Whitetop

http://www.unce.unr.edu/programs/sites/tallwhitetop/

http://jennwarren.hubpages.com/hub/C...oxious-Weeds-I

n-Your-Lawn-and-Garden


Sorry for all the links, but this weed has been the bane of my life
for
30 years. I *may* be just starting to see its grip loosening. I've
even risked planting that part of my garden again (except for one
corner). Previously, I've never dared move a wanted plant from that
area of the garden to another for fear of spreading it. I dream of the
day I never see another leafy spring rosette. Pedipalps crossed.

Oh dear. TBH, I've never heard of this weed being found in the UK
before. I must lead a very sheltered life.


There's a largish colony by a canal bank a couple of miles away from
me, but it's scarce of much of the country. It tends to be
southeastern and coastal.
Cheers, Jake
=======================================
Urgling from the East End of Swansea Bay. We don't yet have a
"dah dah dah dah dee dee deeee" theme tune but we're working on it.

There are a couple of recorded sites at the east end of Swansea Bay,
but there could be less than 50 sites in the whole of Wales.

It would appear that Spider has a rarity and should now go into high
reverse with eradicating it!! I've never seen it before and thought it
looked quite attractive...




You wouldn't think that if you'd lived with it for 30 years! It is only
pretty when in flower, and that is when it is most dangerous. Although
most of those links suggest hoeing is *eventually* effective, I haven't
dared take a hoe to it for fear of chopping up the root and spreading it.

We also had Japanese Knotweed when we moved in. I managed to eradicate
that (although I note it's approaching again from a rear 'garden'), but
Whitetop is horrendous. Don't wish for it. There are plenty of other
white flowers .. Ground Elder, for instance ;~)).


Herbicide Rate Timing Comments
2,4-D LV ester or amine 2-3 lb ae/A Early bud Noncrop treatment
1 lb ae/A Apply in wheat prior to boot stage Avoid drift to sensitive
crops
MCPA 1-2 lb ae/A Early bud Range and pasture broadleaf weed treatment
Dicamba + 2,4-D 0.5 lb ae/A + 1.36 lb ae/A Bolting to early bud stage
Range and pasture; do not apply when grasses are in the boot stage
Chlorsulfuron 0.37-0.75 oz ai/A Prebloom or to fall rosettes
Nonselective treatment Always use a surfactant
Sulfometuron 0.14-0.23 lb ai/A Prebloom or to fall rosettes Noncrop,
roadside treatment
Glyphosate 3 lb ae/A Early bud Nonselective treatment
Glyphosate 2% v/v Early bud Nonselective spot treatment