This guide is a technical support document intended to help forestry practitioners collect the information they need to prepare a silvicultural treatment regime and silviculture prescription in accordance with British Columbia Forest Practices Code legislation. It deals primarily with the collection & stratification of site-specific field data. After information on office preparation, stratification, plot establishment, and mapping procedures, the guide presents data collection procedures for silviculture prescription field forms. Copies of forms are included in the appendix. The data cover such matters as site characteristics, understorey & overstorey, soils, riparian & watershed values, soil & fire hazards, silvicultural systems & objectives, harvesting, forest health, stand tending, and forest resource values.