Things to also note about this plant, it seems to be a great plant for rejuvenating areas that have had high application of duck (perhaps
chicken) manure. It grows abundantly in a duck enclosure that I used to have well populated (am now down to 2 ducks, both of which are 10+ years old) and seems to improve the soil conditions for other weed species to follow.
Best thing for fruit tree zones to beat down invasive grass species - Nasturtiums (Tropaeolum), awesome no maintenance high yielding weed suppressing ground cover with edible leaves and flowers. Plant seeds once, and you'll never have to plant again. Best thing about them is that they're easy to weed out the excess, and the sprawling way they grow tends to leave soil cool and friable. Plant the edges of your invasive grass species with things like comfrey, rhubarb, lemon grass (if you have the climate for it), and horse radish, and problem will basically be solved.