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phill
KG Regular
Joined: Sun Jul 10, 2011 11:49 am
Posts: 25
Location: Wooburn Green, Bucks
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 small flies in the greenhouse Greetings people
I appear to have a plague of small grey/black flies in my greenhouse. They have set up home in the grow-bag compost which I have emptied into pots for growing. To date they are in the tomato, pepper and melon pots, they seem to like the compost and don't appear to settle on the plants. Any ideas what they are and how best to erradicate the problem. there must be hundreds in there. I didn't want to try spraying anything such as Raid or any other household sprays in case of contaminating or killing the plants. All suggestions welcome!!... many thanks.
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| Wed Jul 20, 2011 7:09 pm |
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Nature's Babe
KG Regular
Joined: Tue Nov 03, 2009 7:02 pm
Posts: 2471
Location: East Sussex
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Re: small flies in the greenhouse Hello Phill, welcome to the forum.  Possibly fungus gnats? Try the sticky yellow greenhouse insect traps just above the soil - best used to prevent the problem though in future.
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Sit down before a fact as a little child, be prepared to give up every preconcieved notion, follow humbly wherever and to whatever abyss nature leads, or you shall learn nothing.
By Thomas Huxley
http://www.wildrye.info/reserve/
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| Wed Jul 20, 2011 8:05 pm |
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phill
KG Regular
Joined: Sun Jul 10, 2011 11:49 am
Posts: 25
Location: Wooburn Green, Bucks
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Re: small flies in the greenhouse Thank you nature's babe, will give it a try. 
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| Wed Jul 20, 2011 10:07 pm |
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the custodian
KG Regular
Joined: Sat May 21, 2011 9:52 pm
Posts: 48
Location: torquay
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Re: small flies in the greenhouse hi phill welcome to the forum, if you want a natural defence try buying a couple of venus flie trap plants they will love the conditions in the summer green house and eat lots of flies for you. just remember to bring them in in the winter the kitchen is best.
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if at first you dont succeed try a mint!!!
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| Wed Jul 20, 2011 10:13 pm |
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phill
KG Regular
Joined: Sun Jul 10, 2011 11:49 am
Posts: 25
Location: Wooburn Green, Bucks
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Re: small flies in the greenhouse never thought of the venus fly trap, will investigate further, thanks.
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| Thu Jul 21, 2011 2:56 pm |
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alan refail
KG Regular
Joined: Sun Nov 27, 2005 8:00 am
Posts: 5615
Location: Chwilog Gogledd Orllewin Cymru Northwest Wales
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Re: small flies in the greenhouse phill wrote: never thought of the venus fly trap, will investigate further, thanks. Hi Phill Don't get your hopes up with the Venus flytrap. It only works if the flies fly in - and if the plant wants to eat them. Have a look at this - http://en.wikipedia.org/wiki/Venus_Flyt ... electivity
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| Thu Jul 21, 2011 3:09 pm |
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phill
KG Regular
Joined: Sun Jul 10, 2011 11:49 am
Posts: 25
Location: Wooburn Green, Bucks
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Re: small flies in the greenhouse Hi Alan, think the yellow fly trap are doing their thing as there appears to be quite a few on there. Will hold fire on the venus fly trap. Thanks for the advice, much appreciated
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| Thu Jul 21, 2011 5:00 pm |
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alexhepgurn
KG Newbie
Joined: Fri Mar 30, 2012 6:05 pm
Posts: 6
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Re: small flies in the greenhouse I have one question. Using venus fly trap has any side effect? I have heard some where that they have bad effect for health.
Still I am not sure so need an expert advice.
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| Sun Apr 15, 2012 6:50 pm |
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phill
KG Regular
Joined: Sun Jul 10, 2011 11:49 am
Posts: 25
Location: Wooburn Green, Bucks
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Re: small flies in the greenhouse Hi, my venus fly trap didn't seem to cause any problems. I put sticky tapes by the pots and eliminated most of the flies that way
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| Mon Apr 16, 2012 9:24 am |
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Woodland Elf
KG Newbie
Joined: Tue Apr 10, 2012 12:25 pm
Posts: 2
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Re: small flies in the greenhouse Hi All I've tried sticky traps in the polytunnel before but I am quite tall and they stick in my hair  This year I have bought a Sarracenia Flava pitcher plant that will hopefully eat the bugs and it is hardy so it should be able to live in the tunnel all year. I really like it so I am looking for another one to buy now.
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| Mon Apr 16, 2012 10:22 am |
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