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Debbie JohnsonWriterUniversity of Missouri ExtensionPhone: 573-882-9183Email: JohnsonD@missouri.edu
Photos available for this release:
Sweetunia Vista Bubble
Credit: National Garden Bureau
Description: Sweetunia Vista Bubblegum
Portunia Piccola Pink Vein
Description: Potunia Piccola Pink Vein
Surfinia Trailing Heavenly Blue
Description: Surfinia Trailing Heavenly Blue
Petunia seeds are very tiny
Description: Petunia seeds
Tidal Wave Silver
Description: Tidal Wave Silver
Published: Monday, March 24, 2014
David H. Trinklein, 573-882-9631
COLUMBIA, Mo. – In 1937, animator Frank Tashlin borrowed the name of petunia for Porky Pig’s girlfriend. Just as animation has changed greatly in nearly 80 years, today’s petunia is a far cry from yesteryear’s flower.
“Years ago when Petunia Pig was first named, petunias were nonhybrids, rank in growth, floriferous in season and suffered from ‘summer swoon,’ meaning they reacted very poorly to the heat of summer,” said David Trinklein, horticulture specialist for University of Missouri Extension.
Trinklein says crossbreeding unrelated seed lines has greatly improved the petunia. Today’s petunias are much more compact and free-flowering, giving them a more pleasing structure and appearance.
Most importantly for Midwesterners, today’s varieties can put up with the heat of summer, Trinklein said. Modern petunias are showy in a multitude of colors and color combinations, and will flower continuously throughout the growing season until the first hard frost.
Many of the new generation petunias are clones.
“There are companies that will cross petunias and select from those crosses superior individuals that are not yet genetically stable, so they cannot be seed-propagated. They have to be maintained as vegetative clones,” Trinklein said.
For example, Surfinia, Potunia and Supertunia are all examples of vegetatively propagated petunia brands, he said. In the case of the latter, a new level was set with the development of Supertunia Vista Bubblegum.
“First of all, you better like the color pink, because you’re going to get it,” Trinklein said. “It’s like a petunia on steroids. You see nothing but flowers from the time you put them out until frost knocks them out. It’s an amazing accomplishment.”
However, vegetatively propagated petunias are a bit more expensive.
“Gardeners have learned that their performance is so superior that it usually takes fewer of them,” he said. “They thrive even in the brutal heat of summer, so they may be worth the expense.”
If you prefer growing the plants from seeds, there are new and better seed-propagated varieties available. Ball Seed has the Wave series, he said. They are almost as heat-tolerant as the vegetatively propagated varieties and much more compact than earlier seed varieties. They are also less expensive.
Your grandparents could have only dreamed of the modern petunia. The myriad of horticultural advancements may have prompted the National Garden Bureau to name 2014 the Year of the Petunia.
“I think the National Garden Bureau wanted to call attention to the fact that if you haven’t grown petunia lately, it’s not the flower that you knew 25 years ago, so you ought to give it another try,” Trinklein said.
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