I love alliums, and grow lots of different kinds to eat throughout the year. Over the years I’ve had leek moth and onion fly, but never before onion aphids. At first I thought they must be something else as they are shiny; this, as well as their colour (black), is probably why neither I nor my husband, who is much better with a camera than I am, have been able to take photos of them. Still, having googled extensively, I see that this is what they are.
Has anyone else in the UK had these? I see they are unusual here. My bed of everlasting onions (Allium cepa perutile) is smothered in them, and since none of my other alliums seem to have been affected as yet, I’m tempted to dig up and destroy the whole bed.
What do you think?