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Problem weeds of the week

Here in rural North Yorkshire we get the usual troublesome weeds (ground elder, couch grass, bindweed) but over the last few years i have noticed Arum (lords and ladies) and Bryonia (white and black) becoming much more common. They are little blighters to get rid of once they get a hold, often the tubers are hidden in the hardest to reach places. It is a time consuming job digging them all out but the only way to proceed in a tightly packed herbaceous border. Maybe the glove of doom would work here but i have never tried them with glyphosate. A few weeks ago i remember listening to gardeners question time (Friday afternoon R4) and some one asked how to tackle a garden over run with Arum. The reply was to work with it and leave it alone, it is such a pest to eradicate. Cant see me going down that route, but i do feel like it is taking over the world. In one garden i also am battling Circaea lutetiana (enchanter's nightshade) in a damp shady border where the spreading stolons have got in amongst the roots of shrubs and perennials. RHS website says it is rarely a problem - they must be having a giraffe as it definitely is in this particular border.

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  • I have used a strong solution of glyph and used a small paint brush to apply to leaves in tight spaces.
    Time consuming task though. I had 50m2 of borders to do this to due to bindweed taking hold.
  • Stuart / James, you are both right about using glyphosate. Use one of the strongest formulations you can get such as Roundup Pro V 480. That will do a really good job.

    In terms of applying, a safer & probably quicker way of applying would be with a hand held weed wiper. I've attached both links below....

    Roundup Pro V 480

    Weed Wiper

    Have a good weekend.

    • Even a weed wiper in my case wouldn't have worked. I did think about it but it just wasn't feasible
  • PRO

    Oliver - i bought a weed wipe from you last year and totally forgot about it. Thanks for remindingemyself, . As my business name suggests i only use chemicals as a last resort. Lets see who wins.

    Enchanters nighteshade is a rarely seen weed but a real pain in the ass. Loves damp shady conditions and will thrive in such places. I have my work cut out in one particular bed. The owners call it the white border but the pale pinkish flowers of enchanters do not  fit  in with this! Oh well knowing how to deal with such things is what justifies my rates above the strim blow and mow brigade.

  • sounds like a paint brush and a wide bottom container job if you are on those sites regularly you might be able to spray the ground elder before the other plants come through but the bind weed is later you can try tracing it back to the corm and digging it out

    just over the border hear in the west riding I am having problems with wild violets in lawns cannot get rid of them

    good look on your fight against weeds 

  • Arum is much more common now than 5 years ago, - Especially in the wetherby area - I wonder if its spreading by seed and has some how recently reached a "critical mass" whereby it can spread exponentially.

    As for control, I sometimes dig the whole border out and replant in 10sqm blocks - tarp sheet on the ground behind and do my best - otherwise its Glyphosate which is quite effective but it still comes back.

    • PRO

      With the prevailing wind being westerly  i reckon  the Arum is spreading here from over your way David !  It is one of those unfortuate occasions where a weed can spread both by seed and silently underground. It's  getting everywhere  now. Bryony is becoming a bit of a pain too in places.

      • True, Noticed a large patch of Arum by the river in Boston Spa the today so its going to move down the valley pretty fast - like a plant motorway really.
        It could be worse, it could be varrigated Ground elder.

  • PRO

    This week an exploding seedpod from hairy bittercress went right in my eye. Not the first time this has ever happened either. It amazes me at how small the plant can be and it still manages to flower. One of the very successful pioneer weeds which can germinate flower and set seed whilst  your back is turned.

    • PRO

      Weed of the week is Oxalis corniculata (sorrel), especially the purple leaved variant. Another problem weed with exploding seed pods although they managed to miss my eyes. It is no good hoeing this particular weed as it will be back again in a flash. Must get all the root out and that is not always easy. This one also pops up in lawns although usually the green leaved type.

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