why don't you make a use for it. chickweek is an tasty salad substitute. just grab a handful, making sure you don't pick other weeds you might not know about.
chop up in salads, or in sandwiches.
very healthy wild food!
If you still want to get rid of them, well I don't really know other than pulling them all up.

Can I send you a ton of it? I also understand winter cress and Shepherd's Purse are delectable. :~)

Are you sure you have a draba. Or do you have mouse ear chickweed. That's what I have, and I hate it. It jokes out the grass even. I only know to spray it.

First thing is you need to identify the weed you are trying to get rid of. The draba you describe is so diminutive and I don't believe is aggressive at all.

Here is a link that might be useful: my garden

Would someone mind sending a picture of chickweed???? If it isn't too much trouble!!! I have always wondered what chickweed looks like.
Thanks, Alyson

How old and large is your planting?

A small planting could be hand pulled or spot sprayed.

Taller annuals are easily controlled by keeping young prairies mowed short, preventing the annuals from going to seed.

These shorter annuals are harder to control via mowing, but can be set back with controlled burn.

I wouldn't worry too much about them in a new planting.

Thanks, Joepye

Alyson: Google "chickweed" images. No brainer.

This link is a picture of the mouse-ear, which we've got in our lawn right now- it doesn't seem to spread elsewhere. It is different than regular chickweed, tougher and more hairy- you can eat it, but it's not the greatest. However, I've grown rather fond of these little white flowers that grow from it- they're softer and although a bit hairy also, eating them one after another you sort of get used to it. lol ;)

Here is a link that might be useful: