Brush hog

Typically these mowers are designed to be towed behind a farm tractor using the three-point hitch and are driven via the power take-off (PTO).

They are usually quite dull so they whack through dense plant growth, whereas a sharp blade often gets stuck or slowed.

They are made of heat treated high carbon steel that can withstand strikes with hard objects such as rocks and stones.

Therefore the kinetic energy enables the blades to cut through saplings and small trees up to several inches/centimetres in diameter.

[citation needed] Larger rotary cutters require more powerful tractors to effectively operate.