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Old 18-05-2014, 11:52 PM posted to rec.gardens.edible
David Hare-Scott[_2_] David Hare-Scott[_2_] is offline
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First recorded activity by GardenBanter: Sep 2008
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Default Strange bugs on Blackcurrants

Glenys wrote:
We have some wierd things living on one of our blackcurrant bushes!
I have enclosed the only pjhoto I could find of it on the web, but it
had no discription, so am still in the dark.

It looks abit like the shell of a wood louse, but under it is a thick
lump of what appears to be white gloop, but when it is disturbed, the
white bit pulls out like sticky silk/candyfloss fibre.

Any suggestions, eradications, and if there are any natural predators
we can introduce instead.

ThanX Glenys
Sheffield UK


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The photo isn't very close but from your description I would say mealy bug.
You need a contact insecticed with a soap or detergent to get through the
goo or a systemic as they are sap suckers. On a small plant, eg house
plants in pots, you can get them with a cotton bud dipped in metholated
spirits. Apparently there is now a natural control agent Verticillium
lecanii (a kind of fungus) but I have never used it and I don't know what
name it is marketed under. Perhaps ask your local nursery.

D