4/1/2012 8:04 AM
Geoffrey,
We mow ours in the fall because we have winter and snow that would mat everything down. Also our falls tend to be dryer than our springs allowing a better mowing.
Considering you are open all winter if they look good I would leave them until spring but if they start falling over or collect too much fall debris I would mow in fall.
Given our early spring this year we will probably mow them again in a week or so to even everything out and allow us to spray herbicide.