Notocactus haselbergii
Scarlet Ball
| Family |
| Cactaceae |
| Genus |
| Notocactus |
| Species |
| haselbergii |
| Category |
| Tropicals |
| Synonyms |
| Parodia haselbergii, Acanthocephala haselbergii, Brasilicactus haselbergii |
| USDA Hardiness Zone |
| 9b - 10a |
| Canadian Hardiness Zone |
| Requires cool season protection under glass. |
| RHS Hardiness Zone |
| H3 |
| Temperature (°C) |
| -5 |
| Temperature (°F) |
| 20 |
| Height |
| 10 cm |
| Spread |
| 15 cm |
| Landscape |
| In potted succulent collections, in small scale rock gardens, as a specimen and as a potted patio accent plant. |
| Cultivation |
| Plant in full sun to partial shade in extremely well-draining soil, with loose gravel added to aid in drainage. |
| Shape |
| Rounded to mounding. |
| Growth |
| Slow |
| ID Characteristic |
| Scarlet red to brick-red blooms in early spring. |
| Pests |
| No known pests or diseases. |
| Habitat |
| Dry outcrops, grasslands or pampas 500 - 1200 m above sea level. |
| Bark/Stem Description |
| Fleshy succulent covered in a dense hair-like spines. |
| Flower Description |
| Vivid, showy lotus-like flowers with narrow, erect pinnate petals arranged in rosettes up to 2 cm in diameter. Flowers bloom between 2 weeks to up to 2 months. |
| Colour Description |
| Deep green succulent flesh covered in white spines that fade to a golden brown. Blooms are scarlet red to brick-red in colour with golden yellow stamens. |
| Texture Description |
| Smooth and leathery to coarse and spiny. |
| Notable Specimens |
| Muttart Conservatory, Edmonton, Alberta, Canada. |
| Propagation |
| By division. |