Tagetes tenuifolia
Signet Marigold, Striped Mexican Marigold
| Family |
| Compositae |
| Genus |
| Tagetes |
| Species |
| tenuifolia |
| Category |
| Annuals |
| USDA Hardiness Zone |
| 9 |
| Canadian Hardiness Zone |
| Requires cool season protection under glass |
| RHS Hardiness Zone |
| H4 - H3 |
| Temperature (°C) |
| -7 to -1 |
| Temperature (°F) |
| 20 - 30 |
| Height |
| 30 - 80 cm |
| Landscape |
| Excellent for flower beds and planters. |
| Cultivation |
| Grow in full sun in any moderately fertile and well-drained soil, deadheading to prolong blooming. |
| Pests |
| No serious pest or disease problems. |
| Habitat |
| Horticultural origin. |
| Bark/Stem Description |
| Stems are terete, and barely to extremely branched above. |
| Leaf Description |
| Leaves are pinnate, with 13 - 23 segments of 1 - 2 cm, very narrowly lanceolate and toothed. |
| Flower Description |
| Flowers appear in ray florets of 7 - 8 mm, with few yellow flowers. The number of florets varies greatly between individuals. |
| Fruit Description |
| Fruit is to 7 mm with bristle-like hairs. |
| Notable Specimens |
| Royal Botanical Gardens, Burlington, Ontario, Canada. |
| Propagation |
| Propagate through seed sown in situ in spring. Plants begin to bloom 12 - 14 weeks later. |