The employees of a nursery who are engaged in the following
activities are employed in ``agriculture'':
(a) Sowing seeds and otherwise propagating fruit, nut, shade,
vegetable, and ornamental plants or trees (but not Christmas trees), and
shrubs, vines, and flowers;
(b) Handling such plants from propagating frames to the field;
(c) Planting, cultivating, watering, spraying, fertilizing, pruning,
bracing, and feeding the growing crop.
