Summer in the park

I have spent the last few mornings out painting.  The trees are just beginning to turn color, which helps when painting a mass of green!  I am afraid we will have a short color season since it has been so dry, therefore I am painting every chance I get.  Even if I don't finish these on site, I have enough information to finish a respectable painting later.  My primary goal is to block in the big shapes and values when I know I won't be able to stay and paint for long.  I take several photos for reference also.This is a small plein air piece,  done in acrylic on linen canvas.