Identification: More Plant Identification

I really appreciate the help I get here in this forum. Here are a few more plants I would like to know about:

1. Tall plant found growing in a garden. I think it is a common weed but it does look nice in bloom with lots of yellow flowers.

2. Low growing plants found at the base of some cedar trees. They have very tiny light pink flowers which finished blooming a few weeks ago.

3. Poor quality photo taken at a library branch. I like this plant with white dusty miller-like leaves and yellow flowers.

4. Another poor quality photo from the library of some ground cover with nice yellow flowers.

5. Small plant with purple flowers in a rock garden. It bloomed about a month ago.

6. Tiny yellow flowers found in the woods. They look like violas to me but they are very small.

 

4. Looks like Hypericum sp.

http://en.wikipedia.org/wiki/Hypericum

5. Looks like Viola labradorica.

http://www.google.co.uk/images?q=vi...sc=&um=1&ie=UTF-8&source=og&sa=N&hl=en&tab=wi

6. Another Viola sp.

 

Barbarea
Trientalis latifolia
Brachyglottis (Dunedin Group) 'Sunshine'
Hypericum calycinum
Viola riviniana 'Purpurea'
Viola sempervirens

 

Thanks for sharing your knowledge.