A vibratory shaker for mounting on a crop harvester framework for removing crops from vines, bushes, and trees has a crop foliage engaging brush that is driven directly about a brush rotation axis by a brush driving motor. The crop foliage engaging brush and the brush driving motor are supported for rotation on the crop harvester framework. The power for driving the brush driving motor is controlled to provide oscillatory motion subject to operator controlled frequency, amplitude and oscillatory wave shape.