first one is a geum but could be one of many types. there appears to be a bud forming on it, the taller brown stalk. so when it opens we will be able to give it a name.
the second looks like one of the campanula possible C persicifolia. they start to flower mid may-june so the longer stalks may well be the flowers.
not sure about the third one. but possibly flower this year.
do you remember which plugs you bought?

The first is definitely a Geum, but no idea what the other two are, I'm afraid.