Dasylirion longissimum (Mexican Grass Tree)
Botanical Information
| Family | Asparagaceae |
| Genus | Dasylirion |
| Species | longissimum |
| Synonyms | Dasylirion longissimum var. longissimum |
| Category | Tropicals |
| Type | Shrub (evergreen) |
| Origin | Native to the Chihuahuan Desert and other xeric habitats in Northeastern Mexico. |
Details
| USDA Hardiness Zone | 8b to 10b |
| USDA Hardiness Ref. | |
| Canadian Hardiness Zone | Requires cold season protection under glass. |
| Canada Hardiness Ref. | |
| RHS Hardiness Zone | H4 - H2 |
| RHS Hardiness Ref. | |
| Temperature (°C) | (-9.4) - 4.4 |
| Temperature (°F) | 15 - 40 |
| Height | 2.5 |
| Growth | Slow |
Description and Growing Information
| General Description | A large succulent plant with glaucous-green, stiff, unarmed leaves, up to 1.8 m long. |
| Landscape | Potted specimens, and their symmetrical form provides a striking focal point. |
| Cultivation | Grow faster in a sunny, well-drained area with additional summer water in dry climates. |
| Notable Specimens | Harry P. Leu Gardens, Orlando, Florida, United States of America. |
| Leaf Description | Leaves radiate symmetrically out of a large woody trunk. |
| Flower Description | A 2.7 m tall spike of small white flowers emerge from reddish buds. |
Photographs
Dasylirion longissimum, form, P. Leu Gardens, Orlando, Florida, United States of America.