The sun is rising on Fort Collins, Colorado, and the air smells sweet. Horticulturist Chad Miller from Colorado State University directs a group of master gardeners around the large pots and long, rainbow rows of flowers.
鈥漇o we鈥檙e staying with this as the top? Or have we decided to move to number two?鈥� Miller said, pointing at the 鈥淏loomify Mango鈥� and 鈥淗ot Blooded鈥� Lantana plants, respectively.
But this is no time to stop and smell the flowers. Among the 18,000 plants, several local gardeners weigh in on how the best of this year鈥檚 annuals survived a cool and rainy summer. Some of them are even touching the leaves or bending low to see the underside of the plant so they can write constructive comments.
鈥淰ote for 'Hot Blooded'?鈥� Miller said as he counted the raised hands. 鈥淥K, comments. (It鈥檚) super-duper uniform.鈥�
鈥淪till blooming, bright red flower,鈥� Holly Shields, who works for Denver鈥檚 City Park Greenhouse, said.
But only one plant would get the top prize after enduring Colorado鈥檚 tough growing environment. It鈥檚 all a part of the university鈥檚
The goal is to figure out which plants are the sturdiest, healthiest and most well-liked among experts and consumers 鈥� so companies know what to sell next season. And, with Colorado鈥檚 crazy climate, it鈥檚 sure to be a sought-after proving ground for many breeders in the Mountain West.
鈥淭hey can see Plant X doesn't do as well here, so maybe that's not something they want to invest in (on) the production side,鈥� Miller said.
Here鈥檚 how the garden works: Around 25 companies, like Syngenta, Proven Winners and D眉mmen Orange, submit annuals to test 鈥� plants that only live for one season and have to be replanted the following year.
Student interns and volunteer gardeners start growing the plants in greenhouses in March and April, and then in May they go out to plant. They plant two rows of 18 plants for each entry so it is easy to compare the companies鈥� entries. The gardeners estimate that they have more than 1,100 varieties of flowers.
鈥淭he annuals here have become a major spot, we call this kind of the flower art district of Fort Collins,鈥� Jim Klett, who preceded Miller as trial garden coordinator and worked at the university for 44 years, said .
Then, the gardeners wait to see what happens, carefully measuring how much water is being added to the soil and keeping track of the fertilizer they鈥檙e using.
Undergrad student Tate Erickson helps with the initial observations. He said that despite the cooler, rainier weather this year, generally, the plants have not grown bigger or developed more flowers.
鈥淵ou see it in the plants because they're not like pushing out as big of leaves or they're not as floriferous鈥� he said. 鈥淎nd they were under(water) in early August just by the amount of water that we got out here. They had wet feet for a few days. But they tolerated that harsh condition for a few days and they still look as good as they do now.鈥�

Once the plants go through hell and literal high water, in August, master gardeners rate each one from 1-5. They ask questions like: Is the plant sturdy? Does it have any Japanese beetles or other diseases? Is the color fading?
鈥淵ou just kind of look at the plant overall and say, 鈥業s it healthy or not?鈥欌€� said Patty Bodwell, a master gardener who has judged the annual trial garden for five years, including this one. 鈥淭he way I judge it is: Would I buy it and put it in my garden?鈥�
This trial isn鈥檛 just for expert gardeners. The university also has a consumer day, when anyone can weigh in on what they like. This year, Miller said there were more than 250 people walking the gardens and enjoying the flora.
Miller and his team tally up the results and mark the top five in each section with flags for re-evaluation. Then, a select panel of judges revisit the top five to see if the number one flower still deserves that spot.
The results can be close 鈥� like a tenth of a decimal point. Miller said the re-evaluation is the last chance to see the plant鈥檚 strength and see if the scales tipped.
鈥淭hat's what the consumer's going to want, is if I plant this, yeah, it might look good up until early August鈥ut if it holds into August, that's even better,鈥� Miller said.
The judges write detailed comments about the winners and share the results publicly by spring. Erickson said a third of the flowers in the garden are not on the market yet and were being tested as new plants this year. He would not be surprised if some of these flowers end up on shelves in the spring.
The garden started back in the 鈥�70s on a small plot near the Colorado State stadium. It only had about 100 varieties. But it didn鈥檛 take long before industry interest grew, and so did the garden. Now, in its 23rd year near the CSU Center for the Arts, it鈥檚 one of the largest university trial gardens in the nation.
鈥淲e have become basically a regional trial,鈥� said Klett, the former trial garden coordinator. 鈥淲e really don't have any other trials like this in this part of the country.鈥�
Klett said the area鈥檚 unique climate can help predict how well flowers would do in other parts of the Mountain West.
鈥淚n Colorado, like the day we have today, it's beautiful blue sky, generally low humidity and high light intensity,鈥� he said. 鈥淪o it's a great place, basically, where you can essentially grow and evaluate annuals.鈥�
Erickson has seen growers from Montana and other parts of the region eyeing the garden, since the plants in this garden endure a lot. That includes hail, temperature fluctuations and Fort Collins' elevation of 5,000 feet.
鈥淵ou kind of stress them out a lot and then you see them come out of it,鈥� he said. 鈥�(For) Colorado here, it's like, these plants are resilient if they kind of stand to this.鈥�
Klett hopes this knowledge can help consumers pick flowers that will withstand the elements and improve their success at gardening so that one of America鈥檚 greatest pastimes can live on.
鈥淲e don't want first-time gardeners to spend money and then not be successful in their gardening,鈥� Klett said. 鈥淲e want them to continue to do that.鈥�
This year, the best new variety was the , chosen primarily for its stellar performance in both sun and shade, and in the ground and in containers. The best novelty plant award went to for its surprise blossoms in late August and its unique silver color.
But gardeners and consumers agreed that the best in show was the Apricot Tricolor Dahlia. With its pink gradient color, lack of pests and abundance of pollinators, it was extremely popular.
鈥淚t also received, I think it was 25 or 28 flags (from consumer day), which was more than any of the other things out in the garden as well,鈥� Erickson said. 鈥淭hat one has just drawn everyone's interest all year round.鈥�
In addition to the annual trial, the university has a perennial trial in a flower bed just across the street. It鈥檚 a three-year trial for more than 300 varieties that receive the same evaluation and commentary as the annuals.
Miller and his team hope to build out both the annual and perennial gardens with even more varieties 鈥� like tulips and daffodils in the spring 鈥� soon. For now, they鈥檒l keep experimenting so that consumers can have better, stronger flowers in their own backyards.
鈥淧eople really kind of see the garden in a different way when they know that it's not just like a display,鈥� Erickson said. 鈥淭here's more research and information behind it鈥here else do you see and get to visualize plants and how well they perform? This is one of the best spots.鈥�
This story was produced by the Mountain West 暗黑爆料 Bureau, a collaboration between Wyoming Public Media, Nevada Public Radio, Boise State Public Radio in Idaho, KUNR in Nevada, KUNC in Colorado and KANW in New Mexico, with support from affiliate stations across the region. Funding for the Mountain West 暗黑爆料 Bureau is provided in part by the .