● Shapely subjects: The best-size plants balance a container creation; form and texture provide a polished look. Taller spiky or fountainlike types to give containers a vertical lift include butterfly iris, yucca, cordyline, daniella, ornamental grasses and russelia. For medium- to full-bodied bloomers, consider asters, geraniums, begonias, petunias, million bells, snapdragons, straw flowers, calendulas, osteospermums and ornamental peppers.
● Culture: Choose plants with similar light and moisture needs. Use a well-draining potting mix, and add a time-release fertilizer.
● Finishing touch: Tuck a few pumpkins and gourds among your pots.