Your description of the round see through (hole in the middle) flower sounds like peruvian lily (squill/scilla) as noted above. It's generally only hardy to zone 8. 7 mulched. Are you sure you have the right plant in the photo? The reason I ask is that they they also look like yucca or Adam's needles, and that white flower on the side (top frame) looks like a yucca bloom. They love to multiply... I think I even see a tiny one in the right of the fram. but It's hard to see for sure... EDITED: I just was reading on another garden site that is "not allowed to be mentioned here".. that some folks have success growing Cuban/portuguese/ peruvian lily (scilla) in zone 7 and even 6 in protected locales. Check out the below link for pictures This post was edited by lola-lemon on Wed, Feb 13, 13 at 14:59

After looking at the pictures and before reading the description my thought was spinosissima as well. I've attended a lecture by Peter Boyd and toured his garden, but, I still cannot tell you which one it is. As Mad Gallica notes, naming of the spins is very confusing. Peter Boyd told Anita and I that there were several roses in commerce, all called William the Third. Peter Boyd is in the process of writing a book about spins, not sure when it will be published.

Valerianellas are tiny little things. Unless I have completely the wrong sense of scale this is not Valerianella. Plus leaf shape, texture and veination all look different to me different. Are you 100% certain that no. 2 had 'tiny' flowers? The buds don't look tiny and it is so reminiscent of something along the lines of Silene, Saponaria or Lychnis. 'Will the bleeding heart hurt the boxwood because it's too close?' Much more likely the other way around ;-)

Various willows (Salix species) will produce those leaflets along the stems. Salix nigra for one; also Salix eriocephala and S. lasiolepis. And one with perhaps the most pronounced display of these leaflets is eared willow, Salix aurita, so-called because of the ear-like appearance of the leaflets. They are actually stipules and are often an identifying feature of the genus.