Pulling it out worked well for me. I caught the infestation in time, but there was a good sized amount. My DH and I filled about 7 trash bags full of the stuff, then for the last couple of years, I've kept my eye on that area and yank any stray seedlings I find right away. I only find the first year plants, because they never have a chance to get to their second, and flowering, stage in my yard. LOL.

These things have a 5-7 year seed cycle! It takes years of yanking and you have to put them in trash not just dump or compost because seeds survive and germinate.

Our infestion is considered "moderate" but no matter how much I pull it up it keeps returning from woods and/or neighborhood properties who don't pull, whack or do anything but let them grow.

I didn't know the first year little basal rosettes were related to the upright white flowering weed. Thought the rosettes were just some little wild asarum that kept creeping into grass further and further each year. Found out how wrong I was when the connection was pointed out to me on one of these forums!

Our state ag extension office recommends pulling them. Of course, as with anything else, it helps if you yank 'em while they're young.

I think it depends. In my woods in NYz5, I had 5 acres of poison ivy to clean up. Most of the land was wooded but there was a cleared area where the power/phone lines ran to the house. In the woods, where the plants were relatively isolated, I pulled them by hand and bagged them. I patrolled deep into my neighbors' land because garlic mustard doesn't really notice property lines.

In the cleared area, I tried RoundUp for probably three years running, but found that if I didn't get all the plants quite early in the season, they wouldn't die before they set seed. I switched to weed whacking and believe that, in the end, that would have been effective (I sold the house before I learned the answer).

I also learned that seedlings don't respond especially well to RoundUp. You spray them, but they don't die. I did manage to eradicate several areas that were carpeted with GM seedlings with 2,4-D but it may be (since these appear all summer) that the better approach is to allow them to reach their second year and then weed whack.

Finally, what I learned was that I had to get out there almost as soon as the snow melted. The plants mature very quickly very early in the season. Fortunately, they are whackable a couple of weeks before the desirable woodlanders (and the PI and mosquitoes) appear.

Another thing I learned was that you may as well spend winter hacking down multiflora roses and shrub honeysuckle. Makes it easier to reach some of the garlic mustard later on....