They had been there at least since I saw the first blossom, actually. Only I thought they were part of the bird droppings on the plant, and didn’t think much of them. But then I noticed there were ants on the plants. (Always with the ants. Have I mentioned they’re in my kitchen, too? Each segment the size of a ripe blackberry druplet? The kind you pick from the wild lot down the street when you were growing up, I mean, not the kind you buy in the store for $2.50 a half-pint.) And if the ants were on the plants then clearly there were shenanigans afoot. I looked closer.
Those, as far as I can tell, are black bean aphids, Aphis fabae, which suggests to me that they’re specific to fava beans (Vicia faba, as opposed to Phaseolus vulgaris, the common green/dry bean. Cross “Learn more Latin names” off my 2008 goals list. See? It did turn out to be useful), and the Internet bears me out on this. Apparently they are also a major sugar beet pest, and they overwinter in euonymous and viburnum plants and may migrate to corn, pigweed, and lambs’s-quarters in the summer. You have now received your entomology lesson for the day.
I knocked them off the plants with the hose, holding on to a leaf at the top and trying not to harm the plants themselves. I’m in hopes that they won’t be such a big deal that I won’t get a crop, and that if I just leave them alone a natural predator will show up. I don’t think I can do much else; the sites I looked at advise (a) not getting them in the first place and (b) spraying, neither of which are really helpful.
I think I’m going to put a book on garden pests on my Christmas wish list for this year. Then again, at this rate I’ll be able to put my own book together by then.




7 comments
Comments feed for this article
May 31, 2008 at 5:34 pm
kristi
I find insecticidal soap works best on aphids. More so than other organic means.
May 31, 2008 at 8:22 pm
Elizabeth
If you can find them for a reasonable price, you could release some ladybugs. Aphids are ladybugs’ FAVORITE snack.
June 1, 2008 at 7:08 pm
Jenny
Thanks for the ideas. I’m not sure I have the patience for a soap treatment–but then, I’m not sure where I’d buy ladybugs, either, I’ll have to investigate.
June 2, 2008 at 8:21 am
tansy
ants and aphids are a horrid combination. the ants ‘farm’ the aphids on plants . they like to stroke the aphids and lick the sweet secretions they make so they raise them on plants.
i had a huge infestation on my catnip last year and had to rip most of it out because it was completely covered in aphids and the big black carpenter ants were right there with them.
we also have ants in the house, those big black carpenter ants that BITE. one got its head embedded into my then 10 mo’s leg last year. it was awful. i haven’t been able to completely get rid of them yet and they drive me nuts.
June 2, 2008 at 10:44 pm
Jenny
I feel your pain, tansy. No one in our household has been bitten by our ants yet, but they drive me crazy every other way. I’m sorry about your catnip. (Here’s hoping my beans make it.)
June 3, 2008 at 6:13 pm
Elizabeth
Those ladybugs are usually found at nurseries and garden centers. Call around if you decide you want to buy them, because prices seem to vary greatly.
June 5, 2008 at 10:23 am
Jenny
I’ll do that. Thanks!