A garden vacuum apparatus, such as a grass-collecting lawnmower or a garden vacuum, arranged to collect garden debris, comprising: a housing 1 defining an inlet 17, an outlet 7, and an air flow path 10a, 10b, 10c, 10d, 10e between the inlet 17 and outlet 7 and having a collection chamber 8 therein for collecting garden debris entrained in air flowing through the air flow path 10a, 10b, 10c, 10d, 10e and an impeller 5 in the collection chamber 8, the impeller 5 being mounted in the collection chamber 8 for rotation about an axis 16, rotation of the impeller 5 acting so as to draw in air from the inlet 17 and to drive the air towards the outlet 7 in which the inlet 17 enters the collection chamber 8 on the axis 16 of the impeller 5, facing the impeller 5.
