We got off to a bad start with a weak controlled burn in the mesic prairie this past spring, and as a result, the autumn olive has been nearly impossible to control. As it was already about 3 feet tall before the
growing season, the plants that were not hand cut during the summer put on another 2 or 3 feet of vertical growth. Isolated plants were cut with loppers in July and August, and one dense stand in the middle of the prairie was mowed down with the brush hog. However, there are still a few dense stands that I was afraid of mowing with the brush hog due to some recognizable good forbs. Maybe I'll have a chance to hand cut them before dormancy.
If I don't have a chance to hand cut them, maybe I will try brush hogging them directly after next spring's burn before any plants emerge. While this won't eradicate them, it will at least take the height off of them. Planting semi-aggressive prairie grasses like big bluestem in the densly patched areas might be a good idea too, as to give the space good fuel for future fires.
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