The goal of the annual flower trial at the U of MN WCROC is to evaluate cultivars under regional conditions in order to provide cultivar recommendations for our hardiness zone (Zone 4). At the end of the growing season, our results are published.
Top Ten Winners
Annual flowers are evaluated on unique characteristics, exceptional performance, color and vigor under regional conditions. A visual evaluation and score is given three times during the growing season. Only the highest rated cultivars earn the distinction of a Top Ten Performing Annual.
- 2025 Top Ten Performing Annuals (printable .pdf version)
- 2024 Top Ten Performing Annuals (printable .pdf version)
- 2023 Top Ten Performing Annuals (printable .pdf version)
- 2022 Top Ten Performing Annuals (printable .pdf version)
- 2021 Top Ten Performing Annuals (printable .pdf version)
- 2020 Top Ten Performing Annuals (printable .pdf version)
- 2019 Top Ten Performing Annuals (printable .pdf version)
- 2018 Top Ten Performing Annuals (printable .pdf version)
Annual Flower Trial Results
- Flower Trial 2025 (.pdf)
- Flower Trial 2024 (.pdf)
- Flower Trial 2023 (.pdf)
- Flower Trial 2022 (.pdf)
- Flower Trial 2021 (.pdf)
- Flower Trial 2020 (.pdf)
- Flower Trial 2019 (.pdf)
- Flower Trial 2018 (.pdf)
For reports dating back to 2010, please visit our digital archive.