Hi Jacob - heres some possible ids for your plants....
1. Possibly Betony, Stachys officionalis
2. Goldenrod, Solidago virgaurea
3. I found a brassica with very grey-green leaves (
http://www.wildaboutbritain.co.uk/ga.../q-0709-81.jpg)
that was identified as possibly Hoary Mustard, hirschfeldia incana.....
4.
5. Common Knapweed, sometimes known as Hardheads, centurea nigra