The first one looks like a type of Erigeron (fleabane). The second one looks like a type of wild helianthus . I like both of them. Kinda aggressive but easy to control.

Omar

Thank you, Omar for the very helpful lead! It appears that the first one is Corpus Christi fleabane (erigeron procumbens). I will see how it behaves before determining to keep it in my garden bed, lol. The second one is very probably, as you suggest, a helianthus. It is growing underneath another plant and appears to be in need of more sun. I will keep my eyes on this one as well. It's possible that they will both be keepers in my wildflower garden!

Thanks again,

Molly