Hemlock control

BenAdamsAgri

Member
BASE UK Member
Location
Oxfordshire
How are people successfully controlling hemlock here.
Last year spot sprayed it all with glyphosate and now it’s all come back in the same places.
Any ideas? Not sure I fancy digging a two foot root out for every plant
 

milkloss

Member
Livestock Farmer
Location
East Sussex
What sort of hogweed is it? We have poison hemlock giant hogweed and water dropwort none of which are particularly easy to control because they grow near water. I find glypho will only clear a patch which will encourage new plants to grow in their place.
 
Location
East Mids
How are people successfully controlling hemlock here.
Last year spot sprayed it all with glyphosate and now it’s all come back in the same places.
Any ideas? Not sure I fancy digging a two foot root out for every plant
It's an absolute b*gger. We have used grazon which does kill hemlock but - if it's growing in grass, then the grass survives and leaves less bare soil than with glyphosate for more hemlock seeds to germinate.

It's probably not the same plant that is growing back when you have sprayed, just more seed geminated in the bare ground.

Before now when it got ahead of us we cut the seeding stems and then burned them just to reduce seed spread. So many farmers do not recognise it and unfortunately the reduction in verge mowing has allowed it to thrive.
 
Last edited:
Location
East Mids
What sort of hogweed is it? We have poison hemlock giant hogweed and water dropwort none of which are particularly easy to control because they grow near water. I find glypho will only clear a patch which will encourage new plants to grow in their place.
Hemlock is not hogweed. Hemlock looks like cow parsley but is taller, flowers later and most distinctively has purple spots in its stems. It is also different from water hemlock and is happy growing on a road verge and in a grassland field with no preference for watery areas.
 

TheTallGuy

Member
Location
Cambridgeshire
It takes a few years to get on top of hemlock because of the seedbank in the soil. Advice I was given a while ago was to either spray it early with a hormonal, or later on with glypho - just don't let it go to seed if it flowers. Other option is to just keep cutting it as it is a biennial & eventually you'll stop it!
 

Brisel

Member
Arable Farmer
Location
Midlands
Have many had problems with it making cattle ill?

I had a grazier claim it killed a couple of his heifers, but the field in question had a river running through it and wasn't overgrazed, so I can't see why they would touch it. The same block of land has Red Water & the cattle died the first year he didn't vaccinate against it.
 

BenAdamsAgri

Member
BASE UK Member
Location
Oxfordshire
After talking to a couple people on twitter some have advised to use 2-4D, so we've been using the product kyleo in the knapsack, for anyone wondering, will see how it goes
 

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