How to grow petunias. Planting you can grow petunias from seeds but it is easier to grow them from transplants. If youre planting petunias in containers use a soil less mix. As they are heavy feeders petunias care will also include weekly feedings. Proper petunia care involves removing spent blooms and the seeds they may produce.
Next use a garden fork to loosen the top 8 10 inches of soil then spread 2 3 inches of peat moss and add 2 pounds of a balanced fertilizer per 100 square feet of soil. Do not cover petunia seeds with soil because they need light to germinate. Its best to buy transplants and plant them in light well drained soil in full sun after. Space the plants about 1 foot apart.
They like a slightly acidic soil ph. To grow petunias start in the early spring by picking an area with well draining soil that gets at least 5 6 hours of full sunlight a day. Pinch petunias as you plant to encourage branching. Proper light water and fertilization when caring for petunias will ensure a long season of beautiful blooms.
Petunias require a light fertile soil that provides good drainage. Most petunia varieties prefer full sun but in the heat of summer partial shade will keep them refreshed and blooming better. Like many flowering. Then sow the petunia seeds pressing down lightly on them to be sure they are in contact with the growing medium.
In hottest parts of the country get petunias planted while days are still cool so theyre fully established before heat arrives.