Begin to plant your Petunias at the end of spring or the beginning of summer. If you are planting seeds, start them indoors about 10 weeks before the last frost. I tend to begin growing my seeds in March.
Plant the seeds over top of the potting soil, but do not cover them. Make sure the potting soil is moist.
Keep them on a window that gets a decent amount of sun, and do not transplant them into pots until you begin to see seedlings.
After you plant them in pots, keep them indoors until frost season is over. Once it’s safe outside, plant the flowers in the ground, water theme regularly and watch them grow!
When Petunias begin to die, the dead blossoms sort of just hang around. Check you plant regularly to remove any dead flowers.
Other then that, water it regularly and that’s about all the maintenance required. Enjoy your pretty summer plant!