The Perfect Plant: How All-America Selections Designs New Plants

Add a wow factor to your space with award-winners designed, tried, and tested to make your garden pop.

Think of your ideal plant. How would you describe it? Would it bloom sooner, yield more fruit, grow taller or stay shorter? Today, seed breeders have
the tools and know-how to strive for botanic perfection, bringing out the full potential of any given variety. “It’s all about accumulating good genes for specific traits and then inbreeding until the variety is consistently uniform or true to type from seed,” says Paul Readly, seed breeder for American Takii Inc. in Salinas, California. His Summer Jewel Lavender salvia won a 2016 All-America Selection (AAS) award. (Check out more award-winning hummingbird-friendly flowers here.)

Because seeds can take up to 10 years to perfect, receiving the AAS designation is something Paul is very proud of. “AAS winners truly run the gantlet and emerge as superior plants for any garden in North America,” he says. The designation is considered the highest seal of garden performance approval in the United States.

How AAS Trials Work

1932 was a pivotal time for home gardeners, thanks to Ray Hastings, president of the Southern Seedsmen’s Association of Atlanta, Georgia. He felt strongly that there should be a reliable resource for garden-magazine editors and other members of the press to promote new vegetable and flower varieties. Seed companies responded favorably to his request to set up trial grounds for testing, and the nonprofit All-America Selections organization was born. Eighty-five years later, the AAS methodology remains true to its empirical roots.

From the broad temperature fluctuations of Maine to the predictably warm weather of Southern California, nearly 90 trial grounds across the country host AAS contenders. Entries are judged across four categories: edibles; ornamentals from seed; ornamentals from cuttings; and perennials. “Any breeding company or individual hobby breeder is eligible,” says Diane Blazek, executive director of AAS.

The process is handled like a scientific experiment. After an entry is submitted, “it goes to a Comparison Committee where other varieties currently on the market are selected as comparisons and used as controls,” Diane says. “Both the new entry and the control are sent to the judges for growing out over an average season.” The seeds are evaluated anonymously; score sheets are used to collect data; and an independent accounting firm computes the average results. “This way, each variety is judged solely on its own merits,” she says.

2016 Summer Jewel Lavender Salvia from AASAll-America Selections
All-America Selections 2016 Summer Jewel Lavender Salvia from AAS


The judges—all professional horticulturists who work in the industry—are spread across the nation. “Some are breeders, some are seed buyers, some are from academia or public gardens,” Diane says. They operate on a volunteer basis, scoring the assigned entries for their region from 0 to 5. “We have a mathematical calculation that averages the scores across the country,” Diane says.

With more than 100 judges in total, Diane is confident that each plant has a fair test in multiple areas. “If an entry does not win a national award, we look at the regional scores to see if it performed better in one area,” she says. That would make it eligible to be named a regional winner.

The Envelope Please

AAS winners are announced three times a year, in July, November and January. For Diane and her crew, the unveiling never gets old. “We get to trial new, never-before-sold plants and see which ones perform best in the garden. It’s very exciting to see.” Just don’t ask her to pick a favorite. “Oh my! That’s like picking a favorite child,” she says. For her, the real rush comes when there’s a first-ever in class. “We recently had our first kohlrabi AAS winner, the Konan Kohlrabi,” she says. “We’ve never had a white pumpkin until 2016, and now we have the Super Moon.” She remembers the first strawberry (Delizz) the same year, and the first seedless watermelon, in 2013 (Harvest Moon). “I also get excited any time we have a series like the Summer Jewel salvias or Profusion zinnias,” Diane says.

Winning seeds are available for purchase almost immediately. Try seed catalogs, or check the AAS website for a list of seed companies that sell previous and current winners (

As for future breeders, Paul knows that the novelty of the variety is among the first considerations before entering. “If it stops traffic and elicits a wow response, the variety is definitely a potential entry,” he says. If there’s a single trait all AAS winners share, it has gotta be the wow.

Heather Ray
Heather Ray is a registered dietitian and an award-winning journalist and editor currently residing in Des Moines, Iowa. She earned a master of science degree in nutrition and dietetics. In her leisure time, she enjoys baking, archery, kayaking, and hiking—hoping to someday trek all 2,175 miles of the Appalachian Trail.
Kirsten Schrader
Kirsten has more than 15 years of experience writing and editing birding and gardening content. As content director of Birds & Blooms, she leads the team of editors and freelance writers sharing tried-and-true advice for nature enthusiasts who love to garden and feed birds in their backyards. Since joining Birds & Blooms 17 years ago, Kirsten has held roles in digital and print, editing direct-to-consumer books, running as many as five magazines at a time, and managing special interest publications. Kirsten has traveled to see amazing North American birds and attended various festivals, including the Sedona Hummingbird Festival, the Rio Grande Bird Festival, The Biggest Week in American Birding Festival, and the Cape May Spring Festival. She has also witnessed the epic sandhill crane migration while on a photography workshop trip to Colorado. Kirsten has participated in several GardenComm and Outdoor Writers Association of America annual conferences and is a member of the Wisconsin Society for Ornithology. When she's not researching, writing, and editing all things birding and gardening, Kirsten is enjoying the outdoors with her nature-loving family. She and her husband are slowly chipping away at making their small acreage the backyard of their dreams.