This section is from the book "The American Garden Vol. XI", by L. H. Bailey. Also available from Amazon: American Horticultural Society A to Z Encyclopedia of Garden Plants.
Make of inch boards a box eight inches wide and eight inches deep, and just the width of the window ; bore several holes one inch in diameter, through the bottom for drainage, as window boxes require plenty of watering as they dry out very much. Also nail two strips across the bottom to raise the box off the window ledge. Do not paint the box inside, as painting injures the roots of the plants. Fill the box to within one inch of the top with good rich loam, leaf-mould and a little sand. Get the following plants and plant them in rows, the whole length of the box ; the first row next the edge may be moneywort (Lysimachia nummularia), an attractive trailer ; its shoots will hang down three or four feet, forming a back ground under the box. The second row may be blue lobelia (L. gracilis), which will droop about 18 inches. The third row should be of bright yellow sedum (stone crop). In the fourth row for the back-ground, plant a good dwarf scarlet geranium. Keep them well watered, and you will have a beautiful window box of fringed carpet bedding. - G. M. S., St. Paul, Minn.
 
Continue to: