Three common garden weeds currently blooming in my garden and that you can find all around Chicago; in sidewalks, empty lots and gardens.
The blue flower in the image above is Asiatic Dayflower, an introduced plant to Illinois, it can grow erect or sprawl and can be found blooming from June to October. The flowers are pollinated by bees and the foliage a food source of the Six-Spotted Beetle. One of the reasons I don't pull this weed very often in the garden is because the flowers are a true blue. A lot of flowers you buy commercially that are popular because they are "blue" are really more violet or purple. How can you pull something that blooms a color that people pay good money for?
The Spotted Ladysthumb a long-time resident at Chicago Garden, like the Asiatic Dayflower, is one I remember from my childhood. My cousins would pull the blooms and use them as sprinkles to decorate mud cakes when they were kids.
The leaves of the plant has a spot on them that looks like a wine stain and if clipped or weeded makes a pretty decent garden plant growing at the edge of a bed.
Here, a large clump of it is growing out of a crack in the sidewalk and illustrates the mounding habit of the plant that I find attractive.
The last flowering weed at Chicago Garden is Oxalis.
I find the little yellow blooms attractive and the small banana-like seed pods that develop interesting. It survives pretty well among taller plants and thrives out in the open and can even be found in your container garden.
Comment below reminded me that I forgot to include two weeds currently blooming in the garden.
Nightshade, which is a a species of vine related to the potato, native to Europe and Asia. In my garden it is growing along a fence and currently about 5 feet tall. The leaves are arrowhead-shaped and once pollinated (bumble bees currently loving it) it produces these green fruits that turn orange to deep red and look like miniature tomatoes. They are poisonous to humans, but growing up they came in contact with them a lot and I don't recall being poisoned and I feel pretty alive today. If you have kids or pets in your garden, the best thing to do would be to remove this plant if you find it.