1. Looks like Pensylvania Smartweed. Likes wet areas

2. Wild Cucumber in my area, probably called Wild Clematis in other areas. A woody vine, very difficult to control unless you keep it cut off. Has masses of white, sweet smelling flowers followed by massive fluffs of seed. Might be a garden clematis, also.

4. Lambsquarters.

1. agree it's a smartweed, PA smartweed is common in my parts

2. looks like Bittersweet Nightshade (Solanum dulcamara) to me. If so it will be little purple flowers with the distinctive shape of that family that turn to little red fruit. Spreads readily by seed and root (I have much experience with that!)

3. Looks like Pilewort, Erechtites hieraciifolia. At least it's native and just an annual, like Horseweed. Don't let it go to seed.

4. agree with Lambsquarters, Chenopodium album, although there are a couple of other Chenopodium species about. If lambsquarters, I recommend eating it as part of its destruction. Treat like spinach, much yummier!

5. I don't remember ever seeing this one, and here I thought I have had every zone 5 weed in my yard!

Holy Cow, I cannot believe you cannot ID the last one, i thought I was slacking because I swore I never saw this weed before in my life. I have had some Bizare things happen in my garden this year, one is Rose Rosette Disease, i believe came in on a Michigan Bulb Rose, I am in talks with their gardeners there and I had plant samples sent to Penn state University to declare the disease. I cried!! OH, your IDs are so helpful, I knew some common names but nothing that would find info when I searched Google. I hope someoen can ID the rogue!! You guys rock.

The last one is Bidens, most likely B.frondosa.