Looks to me like Albizia julibrissin, which is considered an invasive. I have a large one in the back yard, and have a few sprouts like the one in the picture in the front yard. I'll bet the sheep would mow it down, goats definitely would. If you are doing the mowing, go ahead and buzz it, because there are probably plenty more seeds where it came from.
It's tough to see in the pictures, but the yellowish things on some of the internodes are flowers/flowerbuds. The leaves certainly look similar (although I'm not sure of the scale), but Albizia julibrissin seems to have clusters of large thread-like flowers, and this has single flowers.
I'll try to take a better picture when I get off work.
OK Rich, you made me go check the weed in front and it is indeed different from the mimosa tree in back and it's exactly like the one in your picture. The weed has smaller leaves (although otherwise they are very similar) and the tree is past flowering and is now in the pod filling stage. Now I'm really curious to find out what we have here.
"You must be the change you want to see in the world." "First they ignore you, then they laugh at you, then they fight you, then you win." --Mahatma Gandhi
"Preach the Gospel always, and if necessary, use words." --Francis of Assisi.
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Partridge pea is considered an excellent
species for planting on disturbed areas for erosion
control and improving soil fertility. It establishes
rapidly, fixes nitrogen, reseeds, and slowly decreases
as other species in the seeding mix begin to dominate
the site. Nitrogen fixation is greatest during the
Sounds like Cattle can get sick if they eat lots of it. Anyone know if it bothers sheep or ducks (Have ducks, wife wants sheep)? Other than that, it sounds like a great cover crop.
Location: Western Kentucky-Climate Unpredictable Zone 6b