First and foremost, be sure to plant your wave petunias in soil that drains well. Petunias are heave feeders, so follow The instructions on your fertilizer carefully but try to feed them once a week. Your petunias should start blooming during springtime and last into fall. Trailing petunias also need sun and well-drained soil, but they need more nitrogen fertilizer than bedding petunias because of their more rapid growth. Or they should. The thing the garden centers don’t advertise is that most varieties of petunias are fairly high maintenance . The flowers are only 1 to 1½ inches wide, but they are prolific and last all season! How long do Petunias typically last (I'm in the Northeast)? Trim them back if they get a … pot. In areas with more mild-mannered weather, they can even bloom into winter. Keep them deadheaded, and watch out for aphids, because they will suck the like out fo them. Spreading or Trailing Petunias: These are low-growing but spread as much as 3 to 4 feet. Also, you’ll need to make sure the area you’re planting the petunias in has fluffy, well-drained soil; is in full sun (or at least partial sun); and has a soil pH of 6.0-7.0.. Next, be sure to dig a six to eight-inch hole for your petunias to be planted in. When you’ve moved your seedlings outdoors or purchased your transplants, you should be sure it’s after your last spring frost. How to care for petunias. When planting petunias in containers, be sure not to crowd your plants, limiting yourself to three per 12-inch (30 cm.) When planting in the garden, work a balanced fertilizer such as 8-8-8, 10-10-10, or 12-12-12 into soil at a rate of 2 pounds per 100 square feet. But too much watering can lead to soggy roots, and a weak plant. If you live in long-season zones 7 or 8, cut back plants halfway in August to force new growth. They will be at their best during the summer though (they do love to sunbathe). Petunias make for gorgeous colorful hanging baskets and decorative lawn borders, lush with varied flower heads that last all summer long. If your petunias start to flag or grow leggy, cut them back and fertilize them. Petunias are perennials, but mostly maintained as annuals, meaning you need to uproot plants, and replant them every year. However, growing petunias in pots, regardless of their type, should not disappoint you, as long as you treat them right. https://gardeningsolutions.ifas.ufl.edu › plants › ornamentals › petunia.html To keep wave petunias blooming, they do need frequent watering. For optimum growth, feed monthly with complete liquid fertilizer. If you are placing in pots, containers or hanging baskets, use a … Hence, if you are interested in harvesting petunia seeds, you can do so for using them in the next planting season. Six to ten weeks before the date of the last expected frost in your area fill 2-inch deep flat boxes or peat pots with moist seed starter mix or soilless potting mix. Most of the time, you will be replanting … Then sow the petunia seeds, pressing down lightly on them to be sure they are in contact with the growing medium. Similar to many other annual flowering plants, petunias produce a large quantity of viable seeds. Millifloras: Milliflora petunias are much smaller than any other petunias on the market. https://www.growerexperts.com › how-many-petunias-per-hanging-basket Petunias do best when lovingly watered and fed every month or so, so they keep putting out more and more blooms. , if you live in long-season zones 7 or 8, cut them back if they get a Millifloras... I 'm in the next planting season your petunias should start blooming during and. With the growing medium to soggy roots, and a weak plant › how-many-petunias-per-hanging-basket for optimum,! 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