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Post by Cherry on Nov 6, 2019 7:52:31 GMT
Vine weevil was obviously brought in with my Heuchera ‘Apple Crisp’ and has destroyed this. This was in my rose pot and was discovered when I was putting in cuttings of a rose. Will the bugs eat the roots of the established rose and will vine weevil killer do any damage to the rose?
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Post by SueA on Nov 6, 2019 9:19:00 GMT
I wouldn't think the grubs would do much damage to the main rose roots Cherry as they're quite 'woody' aren't they but you might want to treat it anyway. I've never used vine weevil killer other than the nematode type which doesn't work unless the soil is warm enough but I would imagine the sprays etc. should be fine on roses?
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Post by Cherry on Nov 6, 2019 14:19:33 GMT
I will get a vine weevil killer which is used in the watering can. Do you think the nematodes work (when the temperature is right) SueA? I have never tried this.
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Post by sweetpea on Nov 6, 2019 16:04:12 GMT
Never having had a problem with vine weevil I can't speak from experience but I doubt if the plants would be harmed from using it otherwise it would be of no use.
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Post by Cherry on Nov 7, 2019 7:37:16 GMT
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Post by SueA on Nov 7, 2019 8:58:57 GMT
I have used the nematodes in the past Cherry on pots & they seemed to work but you do have to repeat it a few times during the season so it can work out quite expensive & the ground temp. has to be above 5C I think. With heucheras that have been attacked & come away with no roots I have sometimes just stuck them in a different pot with fresh compost & they've come back to life so I don't really bother treating with anything nowadays & just squish the grubs if I find any when emptying pots.
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Post by Cherry on Nov 8, 2019 7:48:11 GMT
When I was at the Farm, I used to take them for a long walk and empty the whole pot for the birds. I have never actually seen a bird eating them. Now, my pots are all I have until I get a garden so I am very selective. Too late for the Heuchera. It is away altogether now. I haven’t room or time to look after sick plants. Thanks SueA for you experience with the nematodes. Probably worth the expense.
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Post by steve on Nov 8, 2019 12:41:31 GMT
If you have a fish pond they love em
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Post by Cherry on Apr 15, 2020 10:52:27 GMT
I think it was too cold to use the vine weevil killer and the vine weevil larvae have started on the roots of the zephirine drouhin rose and killed two cuttings which were doing very well. I have treated the large pot again and will get the nematode when the weather is right for it. I don’t think the rose will benefit if it is removed from the pot and the roots cleaned up at this time of the year. Very upsetting! I think now that these horrible things will eat any roots if they run out of the lightweight roots to their liking. Actually, it was the cuttings first, so they were selective. I thought it was the bitter north-east wind we had about 3 weeks ago.
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Post by SueA on Apr 16, 2020 8:33:16 GMT
I found a big fat vine weevil grub chewing straight through the base of a pelargonium cutting in the greenhouse the other morning Cherry so they must be waking up & getting hungry now. It probably is still a bit too cold for nematodes, you need a ground temperature of about 5C I think so maybe another couple of weeks yet.
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Post by Cherry on Apr 16, 2020 12:46:50 GMT
Thanks Sue. You probably all know what it is like to watch a favourite plant suffer. I can hardly bear it. I put the hand trowel down the side of the rose and brought up 2 fat vine weevils. I am going to treat them again soon. It will be too soon, but I am now determined.
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Post by Cherry on Apr 17, 2020 11:29:17 GMT
Good news and now I will stop my moaning. I dug up two dead vine weevils and two sick ones only two days after application. The vine weevil killer is working and no extra was needed. It is called Bug Clear Ultra Vine Weevil Killer and was quite expensive at £7.60 to do quite a few pots.
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