| Description | Autumn Sun Rudbeckia (Rudbeckia Herbstonne) is a wide spreading very tall, full sun perennial. Because of its size and large amount of flowers, this plant can become a showstopper in your garden. It sure is in mine. |
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| Pronunciation | (rud-BEK-ee-a)(nit-TI-da) |
| Plant Type | All Plants, Perennials Hardy |
| Hardiness Zone | 4-10 |
| Sunlight | full sun |
| Moisture | refers moist sites, tolerates average conditions, additional water may be needed during dry spells |
| Soil & Site | average |
| Flowers | 3-4 inch yellow daisy-like flowers, reflexing petals, green center cone, mid to end of July for 6 weeks. I usually have a few flowers on late into the fall. |
| Fruit | achene (a dry fruit where the seed separates from the seed coat) |
| Leaves | alternate leaves |
| Stems | smoother on this plant as compared to other Rudbeckia |
| Dimensions | large plant getting 5-7 plus feet tall by 3-4 feet spread |
| Propagation | division, seeds |
| Native Site | Southern United States |
| Author's Notes | Definitely one of my favorite tall perennials. The plant in my front walk island garden is over 18 years old (as of 2016) and still growing strong. Lots of birds land on this plant and eat the seeds. |
| Notes & Reference | #04-Herbaceous Perennial Plants (Allan Armitage), #06-Perennials for the American Gardens (Clasusen and Ekastro) |
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