A landscape architect's working manual of 1921: not how to grow a plant but where to put it — the plant lists, the groupings, the seasons of bloom, and the reasons behind a designed garden.
The following tabulation shows the average dates for the beginning and the ending of normal planting seasons for deciduous plants in different sections of the United States and Canada. Note how nearly equal are the total working days for spring and fall planting seasons in sections which possess two distinct seasons. For supplementary information refer to Plate No. II and to Plate No. III.