Code of Federal Regulations Title 29. Labor § 29.780.205 Nursery activities generally

(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.