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Red Spider


 
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Unadirty
Rank attained: Hazel Tree
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Joined: 31 Jan 2008
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PostPosted: Mon May 11, 2009 10:09 am    Post subject: Red Spider Reply with quote

Had red spider in the greenhouse last year. Does the frost kill it or should I get a smoke bomb or something to them? Suppose I should have posted this a few weeks ago really before the tomatoes went in. OOPS
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Liparis
Rank attained: Orchard owner


Joined: 23 Sep 2007
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PostPosted: Mon May 11, 2009 11:50 am    Post subject: Reply with quote

Unfortunately it lurks in corners of the greenhouse during winter. Warm dry weather will see it rapidly make a comeback. You can use a smokebomb, a systemic insecticide (they do have a knack of becoming resistant) or you can get biological control for them. Keeping humidity high in the greenhouse, and good shade will slow them down, but humidity getting rid of them is a myth, it's better used as a preventative.
Bill.

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michael brenock
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PostPosted: Wed May 13, 2009 11:13 pm    Post subject: Reply with quote

bill is correct about the red spider.however if you can clear the greenhouse over the winter of every bit of foliage then they have nowhere to survive. weeds can act as host plants but humidity and shading helps to keep numbers down.
michael brenock horticultural advisor (retired)
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Unadirty
Rank attained: Hazel Tree
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PostPosted: Fri May 15, 2009 6:22 pm    Post subject: Reply with quote

Can't tell you how greatful I am to get a response. Thank you. My Da went off up to Heaven two years ago and instinct just kind of kicked in to look after his garden. Yes, I never appreciated how much work he did, do now! Have to keep the tomatoes going for me Ma! It was great when I started 'cause I knew nothing and everything I did was a bonus. Now I'm trying to do things right and it seems I have so much to learn.
During the winter the greenhouse has the grape vines and lots of cacti but I'm presuming if I clean out everything else it would help. I'm not a very tidy person but I'll try!!
My Daddy's yukka also began to flower in January but wasn't very successful. Poor yukka has it's seasons mixed up.
I'm presuming that it finger crossing for this year with the red spider and be a tidy little girl for next winter. Bless me I might even tidy my bedroom!!!
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Liparis
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Joined: 23 Sep 2007
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Location: Co. Meath

PostPosted: Sat May 16, 2009 10:55 am    Post subject: Reply with quote

Keep all rubbish clear from under the staging etc. in Autumn you can empty the greenhouse and mix up some Jeye's fluid in a sprayer and spray every nook and cranny for all sorts of bugs. Now I know you have grape vines in there, a lot of your red spider mite will lurk in the bark cracks etc for the winter, so give your vines a spray as well, NOT while fruit and leaves are on though. Remove all vine leaves from the greenhouse as the die off and burn them, remove tomato plants as soon as they finish and burn them. Red spider mite just loves grape, tomato, peach and several types of pot plant. They will of course attack most things but you will find your main source is coming from the vine. In the spring, introduce predators, they will help reduce numbers through the summer, but it means you musn't use chemicals. Then in the autumn to early winter give the winter wash with Jeye's fluid.
Bill.

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Unadirty
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PostPosted: Sat May 16, 2009 12:41 pm    Post subject: Reply with quote

Bill is my HERO!
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