5 in a 5-5-5 Around the Yard

Somewhere in my viewing of artist's blogs, I came across a reference to an interesting type of challenge.  It seems to be a challenge to get the artist to sketch anywhere, sketch fast, and to not overwork the color.  Most of us artists cab use such practice, so I went for it one sunny afternoon this week.  The parameters:
walk no more than 5 minutes, stop, sketch for 5 minutes, then add color for 5 minutes, then repeat.  With Spring busting out all over, I had no problem finding subject matter, often walking less than a minutes.  As I went from one to the next, I decided the add that 4th 5, thus 5 mini-sketches in a 5-5-5.  And the results: