Blackfly on courgettes

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Mark's Sussex Allotment

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Blackfly on courgettes
« on: June 14, 2020, 16:17 »
Hi all,

My courgettes are getting destroyed by black fly, and they’re all only little.

Leaves are curled and stunted.

See pictures, I need urgent advice as I want to try and sort it tonight if possible.

Can they recover, even?
190FD44D-7AB4-45C4-9B10-617DBA10C369.png
92BC25DB-C2E0-4302-9644-88DA8F41DCF5.png
When weeding, the best way to know if its a weed and not a valuable plant is to pull it.

If it comes out easy, it was a valuable plant !

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mrs bouquet

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Re: Blackfly on courgettes
« Reply #1 on: June 14, 2020, 16:42 »
Rub as much of them as possible off with your fingers.  Have some clean water beside you to keep rinsing your fingers in.   Good Luck,   Mrs Bouquet     You live fairly close to me, and I have got loads of them as well !
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Mark's Sussex Allotment

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  • Location: Littlehampton - West Sussex - UK
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  • 38 year old male, Married father of two
    • Mark's Sussex Allotment
Re: Blackfly on courgettes
« Reply #2 on: June 14, 2020, 19:00 »
Does the old washing up liquid watered down in a sprayer still work, or is that no good for the plant and crops?

I know people used to mention it in the past.

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JayG

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Re: Blackfly on courgettes
« Reply #3 on: June 15, 2020, 16:41 »
Works for me, although there are several other 'recipes' using soft soap and/or cooking oil - take your pick but don't use dishwasher detergent rather than ordinary washing up liquid (might kill the patient, and the aim is also to minimise the risk to any other insects.)

I find that two sprays, the second after the first has dried off seems to produce the best results (the aphids look 'soggy' for want of a better word.)
Sow your seeds, plant your plants. What's the difference? A couple of weeks or more when answering possible queries!

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