one trap plant and a zillion aphids

I have one cabbage and it is covered in aphids. I don't really care if I try to save the cabbage, but am wondering what to do:

- keep it around to continue trapping more aphids
- throw it out to get rid of the aphids that are there.

I don't want to water-spray them off the plant, fearing they will just go find other plants I do care about. And I'm thinking that a spray of some other stuff (neem oil, insecticidal soap, garlic -- whatever) will also end up dispersing them.

So -- if you had a zillion aphids on one plant, and an otherwise (so far) aphid-free garden -- what would you do?

cover it totally in a plastic bag and pull it up.

I agree with rising creek. Once they polish off the cabbage, they'll be hungry.

The only caveat is that if you see aphid predators there, I'd leave it be. Let the predators feast and they'll pay you back later.

what are some aphid predators (besides lady bugs)?

Came across this very interesting article regarding aphid infestation and the way the infestation of one plant can lead to more resistance to aphids for the surrounding plants. This article concerned itself with peppers, but the underground chemical communication concept is fascinating!

http://www.bbc.co.uk/news/science-environment-22462855

Lacewings and aphid midges eat aphids, too.

thanks, need to look them up to see what they look like.