However, most petunia varieties will bloom throughout the summer, except in extreme heat. World traveler, professional writer and consummate gardener, Spengler earned a BA from U.C. A groundcover petunia, ground-planted surfina can cover a backyard slope. Plants can be spaced closer together to give an instant show. While the petunia (Petunia spp.) Hello, I had gorgeous “Galaxy Petunias” that were mainly purple in color with speckles of white. Keep reading to learn how to grow petunias in containers. Petunias are popular window box plants, which suggest shallow roots, so think of that: 6 to 8 inches of depth should be plenty; you might even get away with 5 inches depth. Elongated stems with few branches and diminishing flower production indicate it’s time for drastic action. they bloomed once and then quit. Petunias must be planted much more closely together in containers to look attractively full right from the start. Today I sprayed bug spray on them and within a few hours they looked terrible. Groundcover petunias tend to be smaller. They are compact and bloom until frost. Ideally, petunias are planted in the ground as seeds, as replanting them doesn’t always work. Submitted by kathy on January 9, 2019 - 1:21pm. Avoid watering shallowly as this encourages shallow roots. They don’t tend to flower in the shade. There were also pansies and snap dragons in the same boxes that withered but the asparagus fern and sweet potato vibes are fine. It’s best to buy young plants from a nursery which often sells petunias in flats. If petunias show signs of long, “leggy,” weak growth, pinch the plants back a few inches to encourage branching. BONUS: You’ll also receive our Almanac Companion newsletter! Submitted by Susan richardson on May 31, 2018 - 5:03am, Ive purchased 2 hanging baskets one is flowering nicely the other is still green with no flowers on it yet what is going on please help. This makes them ideal for scrambling down a hillside garden, or planting atop a retaining wall. It could be from limited chlorophyll or another component of photosynthesis. This Australian native grows just as fast as the Wave petunias, achieving 3 feet or more over the course of its long growing season that continues until the first frosts. Some even have a slight fragrance. However, if you are going to plant it in a container or in a hanging basket, as most people generally do, you should know that it’s going to require a bit more water. Double-flowered cultivars like a biweekly dose of fertilizer. They flower lavishly and require no deadheading or pinching back. Soil prepared before planting petunias should have well-composted organic matter worked in. The plants may look raggedy at first but they’ll rebound with more color and blooms. Plants remain about 6 inches tall and spread more than 5 feet across, making them a good choice for hanging baskets or patio pots. The Proven Winners® petunias are more floriferous because all their energy is put into flower production, not seed production. From Alaska to California, from France's Basque Country to Mexico's Pacific Coast, Teo Spengler has dug the soil, planted seeds and helped trees, flowers and veggies thrive. Doing so may harm the plant’s root-base, and inhibit the ability to take in water and nutrition. Submitted by Rox Shinobi on December 1, 2020 - 2:11am. Petunias are one of the most popular garden flowers for both borders and containers. Submitted by Kathy Horn on June 19, 2019 - 1:36pm. The content of this field is kept private and will not be shown publicly. Spreading or Trailing Petunias: These are low-growing but spread as much as 3 to 4 feet. Good luck, happy gardening! Surfina (Petunia integrifolia), also called wild petunia, is a classic petunia frequently used in window boxes. The fast-growing trademarked plants produce blossoms from early spring to the end of autumn and tolerate heat, cold, wet weather and humidity. You can find petunias in just about every color but true blue and with growing habits that mound in borders or trail down containers. I HAVE SPRAYED SEVEN AND USED SNAIL BAIT. The plant may bloom when it is lightly shaded for part of the day, but as a rule, a petunia not blooming can be because it does not get at least six hours of direct sun per day. Submitted by John Solem on June 21, 2018 - 8:15am. but be ready to buy plants for the windowboxes—and give the individually potted/ready-to-plant seedlings to guests as a remembrance. Will it recover? Dead-heading prevents seed pods from competing for the plant’s food supplies. It's Nov 20th in 9a zone. ‘Fantasy’ forms neat, compact’Fantasy Pink Morn’, a milliflora type petunia. This will encourage more branching and flowers. Submitted by Karen Irwin on June 23, 2019 - 10:05am. There are a few ways to control Mexican petunias from overtaking other areas. However, some Wave series flowers climb up trellises or cascade down like vines when grown in restricted space. Wave petunias come in several varieties: trailing, mounding, and spreading types. Thanks, Submitted by The Editors on June 10, 2019 - 4:37pm. Petunias need full sun or they will become spindly. Wave petunia plants are so versatile they can accent almost any part of … Otherwise, the plant think it has no reason to flower any longer. How Far Apart Do You Plant Petunias?. The best deterrent by far is peppermint. What size of pot we can use for it In most regions, watering the plant just once in a week is more than enough. To deadhead petunias, allow the plant to fully flower and for some of the blooms to die before pruning. If we may make a suggestion: Start your seeds and see how it goes (pls let us know!) Remember to water them. They produce flowers in a broad range of colors including pastels, bright neons, and blends. Note: The spreading types of petunias and those in containers require more frequent watering. Petunia Supertunia® generally stand around 6- 10 inches tall and can spread/trail up to 24-36 inches, with the exception of Vistas petunias which have a mounding habit and can get 24 inches tall and 24-36 inches wide. Mine were doing great and my husband sprinkled Seven on them and the blooms on one variety withered but I had some white ones that look okay. We've had several frosts and the flowers and leaves still look good. These are similar tol organic methods, Submitted by Judy Reavis on June 9, 2019 - 2:04pm. I really feel like it was the Seven but I am only basing that on my gut. Like their single counterparts, ‘Double Madness’ petunias bounce back within hours of a rainstorm. To hasten things, put the sprouts under a fluorescent light for 12 hours per day to mimic spring conditions. Submitted by The Editors on December 1, 2020 - 3:10pm. They are good for containers and hanging baskets and will do fine planted directly in the ground. Your petunias may also be wilting due to a problem with insects.