The Mexican Grass Tree is a long-lived, dense-leaved, evergreen succulent that tolerates heat and drought and requires little maintenance, just be sure to plant with enough space for it to reach its full size.
It may look like a large grass but the very thin, grey-green leaves are rigid and long, measuring 4-6 ft. by ¼ inch wide. The wiry leaves radiate outward from the crown symmetrically, creating a finely textured, sculptural appearance.
Over time, Dasylirion longissimum will slowly develop a large woody trunk that reaches 10 ft. tall with a 6-8 ft. crown. Creamy white flowers on 10 ft. tall flower spikes appear on older, mature (7 years or older) plants in summer but may not flower every year.
The female plant will have decorative reddish seeds after flowering, while the male flower stalk is wheat colored.
Best grown in full sun in loose, well-draining soil. Be sure to deeply water the soil to develop a good root system, allowing the soil to dry in between waterings; reduce frequency once established. Avoid watering the crown which can lead to rot. Give little to no water during winter. Remove the dead, bottom leaves with pruners for a tidy appearance.
Height: 6-15′ Spread: 6-8′ Bloom: Summer (may not flower every year) Light: Full Sun Water: Low Zone: 8-11 Origin: Mexico
