It may be Lobelia. Check out this link and see if this is your plant. Most Lobelias are dark blue but they do come in this color. If it is Lobelia, they are readily available at garden stores. Linda

Thank you both for answering my question. I had been looking on the internet for quite a while to find the name of that plant. So, it is an annual, not a perennial. I am curious to see if the seeds will come up next Spring.

The second photo is definitely an azalea. I would also agree with bboy that no. 1 is a flowering quince ie Chaenomeles x superba. The clincher is the pair of rounded leaflets clasping the twig on the right hand side of the photo. I can't decide on the last picture. I am not very familiar with peach blossom but it's seems to me that there is too much foliage out at flowering time for it to be peach. It looks much more like Chaenomeles to me. The red tinge to the leaf edges is typical. They are not often grown as standards but it can be done. Could we have some shots of the whole plants rather than just close-ups? Here is a link that might be useful:

Commelina, or dayflower. They are a trap for flea beetles in my garden and look terrible about mid-summer. And reseed everywhere. Pretty easy to pull out though. Sandy