Need a few plants ID'd

1)


2)



3)

This one might have came from home made compost??

 

1 - stumped me a bit with the seed pods but it favours a tree lupin or maybe one of the thermopsis

2 - Agastache

3 - Spuds

 

Will I be able to harvest the spuds?

 

They are possibly not big enough yet to harvest the leaves are still very green, it looks quite young growth to me so they may not grow much now until the end of the season.