Petunias are half hardy annuals
and are related to the potato and other members of the nightshade family. Their
familiar trumpet shaped flowers come in several shapes. Moreover sizes and
colors, from the old fashioned single flowers to modern hybrids that are
striped, double ruffled and sometimes very large at least four inches across
for the grandifloras. The new multiflora petunias are small and single and
bloom very profusely they are also disease resistant. Since petunias make
compact plants with masses of color, they are excellent in flower borders. We
find that more modest, simpler petunias are less decimated by heavy rainstorms
than the more flamboyant ones; the latter, though are fine as container plants
in sheltered locations. The trailing petunias, such as the grandifloras, are especially
effective in pots, planters and boxes. Petunia colors are virtually unlimited;
there are even striped, bicolored ones. Height ranges from six inches dwarfs to
18 inches full size plants.
How to Grow Petunia
Well, you need to sow seeds
indoors eight to ten weeks before the last frost, dropping the tiny seeds onto
the soil surface and pressing lightly with the fingers. Keep the seedlings
cool, and transplant then carefully to individual peat pots when each seedling
has four leaves. They can be set out in the garden 12 to 18 inches apart after
danger of frost in fairly fertile soil. Some petunias especially the doubles
are slow to grow from seed and you may be better off with nursery grown
seedlings.
Petunias are warm weather plants
but they sometimes do poorly during hot weather. If they look straggly and aren’t
blooming well, cut them back to a few inches tall and feed them liquid fertilizer
that you water in well. Petunias will self-sow readily, but the seedlings will
rarely look anything like the parents.