Petunias have been popular for years in the home garden, and its easy to see why.
With a general habit to cascade, the larger types are ideal flowers for pot containers or hanging baskets. In this way they can
be transported anywhere a splash of color is needed in a garden, porch, balcony, or windowsill where they can receive full sun to partial shade.
Be warned, however, that the less sun they receive the less blooms petunias will produce, so try to pick a spot that gets at least 5-6 hours of sunlight a day.
How far apart to plant petunias depends on the variety, but most types look more attractive bunched together (especially when grown in containers.) The one exception is when planting the spreading ground-cover varieties of petunias which normally require spacing of 1 to 1 1/2 feet apart.
The main types of petunias are grandifloras, multifloras & millifloras, each with their own characteristics and growing habits. All are generally easy to grow, come in a variety of eye-popping colors (or multicolors), and bloom all summer long.
Besides traditional pink and purple, petunias come in a variety of colors including red, white, and multi-colored.
As the name suggests, grandifloras produce large blossoms - sometimes up to 6 inches across - although they won't flower as much
as multifloras. The larger, delicate blooms also usually don't stand a chance against heavy summer rains. Larger size petunia plants usually need to be cut back to avoid becoming straggly and to promote new blooms, especially at the height of the growing season.
For smaller gardens, and much easier care (with no need to prune or pinch back), millifloras have been developed as a new addition to the petunia family. Their compact size makes them ideal for edging or ground cover with blossoms a mere 1 1/2" across...