The goal of the annual flower trial at the UMN WCROC is to evaluate cultivars under regional conditions in order to provide cultivar recommendations for our hardiness zone (Zone 4b). At the end of the growing season, our results are published. Find a link to our year-end trial reports below.
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 four 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
Documents below published before April 2026 were created before current policy requirements took effect, and therefore may not be accessible. To request this content in an accessible format, contact [email protected].
- 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.