WINDOW BOXES AND HANGING BASKETS : Page 760
A. Window Boxes. The following group of plants are thoseadapted for window boxes in varying exposures of sunlight. Theseplants should not be placed in window boxes which cannot be thor-oughly drained unless great care is exercised in watering; otherwisethe soil will become sour and the plants will be "drowned out."
a. South or west exposure:
Ageratum houstonianum (dwarf) Hedera helix
Floss Flower English Ivy
Antirrhinum (intermediate or dwarf) Heliotropium peruvianum
Snapdragon Heliotrope