Here’s a picture of one of the false foxglove varieties. I photographed this one on the North Trail near The Homestead last year.

False Foxglove

This year I noticed some hawkweed growing in the backyard. The yellow flowers are taller than dandelions and coltsfoot with different leaves.

Hawkweed

Hawkweed Closeup

Here’s another photo of small yellow flowers spotted along the road during a jog. According to this site, sweet clover is an invasive plant:

Native to Europe it was brought to the U.S. in the late 1600s…

Sweet Clover Closeup

Sweet Clover

These tall yellow flowers are common in sunny areas.  They remind me a bit of the cardinal flower, in that they would be more spectacular if all the blossoms bloomed simultaneously.