Just wondering if it's an interesting native plant or something that will take over if I leave it alone. It's both.

It may be one of the Solidagos (goldenrod.) Not much confidence in that suggestion, but wanted to bump this back to pg. 1. In Canada? Do you know what zone you are in?

Carmie - Lowes has some really beautiful Spiderworts this year, ice blue, ice blue with darker centers, plus others which are darker purple. If you decide you like the plants, they are $4.98 for the gallon and $7.98(?) for the larger ones - well that's what my Lowes in Newington CT has them for. They are great in moist areas - I've developed a dry stream bed around the outlet from the french drains around our house. This area is relatively moist and the spiderworts love it. Jakki

yes, it totally could be. This house had a well tended garden, but in the last couple years I think the owner had some health issues, and we all know how fast weed can take over. I was curious so I let it go, one of the few I did let go. I can't see the leaves at all, they are under the cover of the hosta, and I don't think they are very attractive. But, that particular yellow colored bloom and flower shape seems to look nice to me with the lupine. I'd like to try and emulate that look with something with nicer foliage. If anyone has any suggestions as to what my bloom with the lupine and resemble that sort of color and light, airy, flower, I'd love to hear them. Thank you linaria_gw!