Throughout the summer season annuals provide quick colorful impact in the landscape. The Cincinnati Zoo & Botanical Garden has been the site of one of the largest Annual Trial/Display programs in the Tri-State region. Over 20,000 annuals are planted and labeled each year throughout the Zoo. Photos are taken, and selections and recommendations are made, on summer annuals that provide the most color and impact with the easiest of care. A visit to the Garden in the summer provides visitors with numerous ideas of how different annuals perform and look in the landscape setting. The Annual Trials are a cooperative effort with The Cincinnati Zoo & Botanical Garden, Cincinnati Flower Growers Association and The Ohio State University Extension Horticulture Program in Hamilton County.
| Genus | Cultivar | Producer | |
| Begonia | Whopper Series | PanAm | |
| Gomphrena | Fireworks | PanAm | |
| Hibiscus | Mahogany Splendor | PanAm | |
| Zinnia | Uproar Rose | Syngenta | |
| Melinus | Pink Champagne | PW | |
| Coleus | Signature™ Gnash Rambler | HC | |
| Begonia | Braveheart™ | Syngenta | |
| Zinnia | Zahara Double Fire | PanAm | |
| Plectranthus | Silver Shield & Silver Crest | PanAm | |
| Angelonia | Archangel Raspberry | Ball | |
| Begonia | Gryphon | PanAm | |
| Evolvulus | Blue My Mind™ | PW |
Best Botanical Garden 2010 Annuals Video
Zoo's Best Top 10 Annuals
- Coleus Gays Delight
- Coleus Electric Lime
- Cleome Senorita Rosalita
- Dahlia Mystic Illusion
- Impatiens Trailing Fanfare Orchid
- Petunia Supertunia Vista Bubblegum
- Lantana Landmark Citrus
- Perilla Gage's Shadow
- Vinca First Kiss Think Pink
- Dichondra Silver Fall




