Regrowth Mesquite , not a Mesquite tree but rather a freak bush/tree that will ruin pasture land in a few short years. A Mesquite tree is a single trunk tree that grew from seed and is welcome by everyone where as regrowth Mesquite is what comes back when a Mesquite tree is cut but not killed by cutting the tap root . Regrowth is produced by cutting a tree down , shredding trees down , mulching trees down , instead of one trunk it grows back as a bush with many trunks and it’s these many trunks