A device for forming a hole in soil has a tubular head 11 open at one end and an elongate handle 10 projecting from the other end. The head 11 is in the form of a sleeve 16 having outer and inner walls 20,21, the cross-sectional shape and size of the sleeve being substantially uniform for the greater part of the sleeve. The open one end of the sleeve is defined by a rounded end wall 23 which interconnects the outer and inner walls 20,21 and the internal cross-section of the sleeve 16 in the region of the rounded end wall 23 is smaller than the internal cross-section of the greater part of the sleeve defined by the inner wall.
