Yucca filamentosa 'Excalibur' (Adam's Needle Yucca 'Excalibur')
Adam’s Needle is a versatile yucca that fits well in small and large spaces alike. Its creamy-colored blooms are impressive in size and bring hummingbirds running. The rosette itself is attractive, trunkless, and on the smaller side. Adam’s Needle Yucca is easy to grow and does well in full sun, part sun, or part shade conditions. It prefers well-draining or sandy soil but is tolerant of clay as long as it is not overwatered or planted in a low spot. Even deer do not eat the yucca’s leaves, they do love munching on the blooms. Adam’s Needle, like all yuccas, depends on the yucca moths for pollination.
'Excalibur' has a compact form, unique bluish color and edges with numerous curly, white filaments. It has a neat round habit, slightly smaller than the straight species.
AT A GLANCE
| Texas native |
Nativar (see Notes below) |
| Water use | Low |
| Sun exposure | Sun to part sun |
| Bloom color | White |
| Bloom time | Spring, summer |
| Mature height | 2-3 ft |
| Mature spread | 3-4 ft |
| Evergreen | Yes |
| Attracts | Hummingbirds |
| Host plant | Yucca giant skipper, cofaqui giant skipper |
| Deer resistant | Yes, except blooms. |
| Notes |
USDA map shows it marginally native to the state, BONAP map does not show it as native. |
DISTRIBUTION MAPS
 Present in state |
 Present in county and native |
 Native to North America, but adventive & escaped in state |
 Not present in state |
 Present and rare, native in county |
 Previously present, now extinct |
 Questionable presence (cross-hatched, regardless of color) |