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• PRO

  Phil Voice September 14, 2014 at 11:06am

  Check out this RHS advisory on Vine Weevil Gary: https://www.rhs.org.uk/advice/profile?PID=234
  Are they the grubs you're seeing?
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  Simon Smith September 14, 2014 at 11:09am

  Sounds a bit like vine veevil, i have used nematodes to treat them very effectively in the past.
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  Simon Smith September 14, 2014 at 11:13am

  They also leave little round holes in roots and tubers about 5mm deep are the tell tall signs often.
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  Ian Street September 14, 2014 at 11:42am

  Most likely vine weevil. Nematodes are a great environmentally friendly option, though the weather very much determines the success rate. Most good garden centres and diy centres now sell an effective chemical treatment too.
• PRO

  Gary RK September 14, 2014 at 11:53am

  Looks like vine weevils then - ie these little critters :-(

  

  It's been years and years since I've had to deal with anything like this at sites. My concern is whether the plants are too compromised and wondering if best to pull out plants (and destroy) and then treat remaining soil or persevere with plants in situ ?
• PRO

  Robbie September 14, 2014 at 1:12pm

  Treat with cyren
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  Nick Steele September 14, 2014 at 1:14pm

  Vine weevil love Heuchera! If they've eaten most of the roots, then probably they're a lost cause, and you'll need to dig them up. Obviously, make sure you dig up the entire root ball, so you also discard all the grubs.

  If the plants look as if they might be worth trying to save, you'll find chemicals on the garden centre shelves, and nematodes available usually by mail order I think.

  Heuchera really are one of vine weevils favourite plants, so it's probably worth replacing them with something else - you're bound to miss a few grubs when you dig them up, and they're probably elsewhere in the garden anyway, so bringing in a fresh batch of heuchera will just see a replay of the current situation in a years time.
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  I Green September 14, 2014 at 1:42pm

  Definately Vine Weevils. Nematodes are effective as long as the soil is above 14 degress c.
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  Sarah Russell September 14, 2014 at 8:07pm

  Vine weevils, definitely! They are starting early this year. I find that if you lift them, repot them and treat them, they recover okay, new fine roots will grow from the stem base. However you may find it commercially more viable to dig them up, treat the soil and then replant with new plants.
• PRO

  Richard Gadsby September 15, 2014 at 12:41am

  We have had these on our estate where we live and they have made a right bloody mess of the hedges.
  Management company took 18 months to agree to spend OUR money (mangement fees we have to pay to live here) on getting the contract gardeners to spray them. The gardeners wanted to deal with it but were told it was too expensive!! A lot are dead and are going to be replaced and I quote " in the near future!!!"
  I ended up spraying the one outside my house myself last year and it's not doing too badly now.