| Description | Mexican Hat (Ratibida columnifera forma columnifera) this is the more common yellow form of the Mexican Hat Plant. A native plant with a large terminal cone of disk flowers. |
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| Pronunciation | (ruh-TIB-ih-duh) (kol-um-NEE-fer-uh) |
| Plant Type | Perennials Hardy, Wild Flowers |
| Hardiness Zone | 4-9 |
| Sunlight | full |
| Moisture | average, tolerates dry ones established |
| Soil & Site | average, adaptable, naturally found growing in prairies, waste ground, disturbed sites, roadsides, railroads, intolerant of moist heavy clays |
| Flowers | yellow flowers reflex at the base of the central cone, floral inflorescence borne singly on the terminal tip of a branch |
| Leaves | green, alternate, simple leaves, deeply pinnatifid giving a ferny look |
| Dimensions | 1-3 by 1-1.5 feet (HS) |
| Propagation | seeds, may need a cold dry stratification for better germination. I have grown this twice from seed with only moderate success. Next time I will try stratification. Usually blooms second year from seeds. |
| Native Site | Alberta to Minnesota south to Arkansas, New Mexico and Mexico. |
| Misc Facts | The name "columnifera" means column producing. The flower has an upright columnar receptacle (central cone). (syn. Ratibida columnaris, Rudbeckia columnifera), AKA: Upright Prairie Coneflower, Long-headed Coneflower, Thimble flower |
| Notes & Reference | #04-Herbaceous Perennial Plants (Allan Armitage), #144-Missouri Botanical Gardens web site (www.missouribotanicalgarden.org) |
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