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tomplum
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what are these Empty what are these

Sat Jul 05 2014, 16:38
just spotted these little blighters on my Delias anyone know what they are and if they're harmfulwhat are these SAM_0415_zps766c21bd?
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what are these Empty Re: what are these

Sat Jul 05 2014, 16:40
Blackfly.


what are these Blackfly3
tomplum
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what are these Empty Re: what are these

Sat Jul 05 2014, 16:41
bad fucus I know but they're very tiny and i zoomed in, but the camera's not up to detailed pictures,  Sad 
tomplum
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what are these Empty Re: what are these

Sat Jul 05 2014, 16:41
are they harmful ?
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Sat Jul 05 2014, 16:45
From the royal Horticultural society

on-chemical control
Aphids have many natural enemies, including ladybirds, hoverfly larvae, lacewing larvae and several parasitic wasps. Some of these are available for biological control of aphids in greenhouses (aphid predators). Unfortunately, damaging aphid infestations often build up on garden plants before the natural enemies are active in sufficient numbers to achieve control. Use your finger and thumb to squash infestations on small plants. Picking off the tips of broad beans as soon as the blackfly are seen can reduce and delay infestation, and also improve the yield of beans

Chemical control
Check susceptible plants frequently from late spring onwards so action can be taken before a damaging infestation has developed. Organic sprays, such pyrethrum (e.g. Py Spray Garden Insect Killer, Bug Clear Gun for Fruit & Veg, Growing Success Fruit & Veg Bug Killer), fatty acids (e.g. Bayer Organic Bug Free, Doff Greenfly & Blackfly Killer) or plant oils (e.g. Vitax Organic 2 in 1 Pest & Disease Control, Bug Clear for Fruit & Veg) can control blackfly. These pesticides have a very short persistence and so may require several thorough applications to keep blackfly numbers down.
More persistent insecticides are lambda-cyhalothrin (e.g. Westland Resolva Pest Killer) or deltamethrin (e.g. Bayer Ultimate Fruit & Vegetable Pest Killer). These insecticides can be used on beans. For blackfly on ornamental plants, systemic insecticides, such as acetamiprid (e.g. Bug Clear Ultra) or thiocloprid (e.g. Bayer Provado Ultimate Bug Killer), can also be used.
When using pesticides on edible plants make sure the food plant is listed on the label and follow manufactures instructions on maximum number applications, spray interval and harvest interval.

Plants in flower should not be sprayed due to the danger to bees and other pollinating insects.
tomplum
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Sat Jul 05 2014, 16:48
bee's come first, I have quite a few, so i'll just put up with them,
Ragbru
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Sat Jul 05 2014, 16:53
May be worth using one of these, with plain water to physically knock them off, causing no damage to anything else.

what are these 1-litr10
Temeluchus
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Sat Jul 05 2014, 16:54
Tom, a weak solution of diluted washing liquid in a spray bottle carefully applied with deal with them. Just spray the stems where they are.
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Sat Jul 05 2014, 19:18
yep, I'll try that, thanks all,
veg grower
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Sat Jul 05 2014, 21:58
Just use your finger and thumb to remove - anything else and you risk killing all the good insects!
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Sun Jul 06 2014, 19:58
the soapy water spray seems to have discouraged them for now and the bee's are still interested so I think thats a winner, fingers crossed,
Temeluchus
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Sun Jul 06 2014, 20:03
That's what I use, Tom what are these 709307421

Aphids also encourage ants too, because the ants harvest the nectar aphids secrete, and so ants protect them from ladybirds and such. Little blighters they are.
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