The firming of the soil about the roots of a newly set plant is as important as firming it over planted seeds.
I find this more effective than firming the soil with the foot, as it prevents the possibility of loose planting.
Push the sets well down into the ground and cover with soil, firming them with the feet or a roller.
It meant only the selection of stones and firming them into place.
late 14c., from Old French ferm (12c.) "firm, strong, vigorous, steadfast; loyal, faithful," from Latin firmus "firm, strong, steadfast, enduring, stable," from PIE root *dher- "to hold, support" (cf. Sanskrit dharmah "custom, law," Greek thronos "seat," Lithuanian dirzmas "strong," Welsh dir "hard," Breton dir "steel"). The return in late 1500s to -i- from Middle English ferme was modeled on Latin. Related: Firmly; firmness.
"business house," 1744, from German Firma "a business, name of a business," originally "signature," from Italian firma "signature," from firmare "to sign," from Latin firmare "make firm, affirm," in Late Latin, "confirm (by signature)," from firmus "firm, stable" (see firm (adj.)).
c.1300, fermen "make firm, establish," from Old French fermer (12c.) or directly from Latin firmare, from firmus (see firm (adj.)). Related: Firmed; firming.