A seed firming assembly is mounted to a planter by a bracket attached to a seed tube guard between a pair of opener disks. The bracket has first and second sides that define a cavity therebetween for receiving a seed tube. A first mounting structure in front of the cavity secures the bracket to the seed tube guard. A second mounting structure behind the cavity attaches a seed firmer to the bracket with a pivot connection that allows rotation of the seed firmer relative to the bracket about a generally horizontal transverse axis. A stopper bushing limits an extent of forward pivoting of the seed firmer relative to the bracket, and an adjustable tensioner mechanism limits an extent of rearward pivoting. The seed firmer has an upper portion comprising a leaf spring, and a lower portion comprising a material that has a higher abrasion resistance than the upper portion.
