stinging nettles at the training hill

Spent a few hours on the training hill. it was hard to do much because of the heat. Did a couple of flights. The wind was varying so take off required some ground handling skills to turn the glider into the wind. i also got to try my new harness for the first time. The first landing was text book, and the second landing was going well until a few feet from the ground when i discovered that what i thought was tufts of grass were actually nettles and thistles. Ouch!! i tried to fly past them but my legs got it! because of this i slightly over flew and landed in a potato field.