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Mexican Grass Tree, Toothless Sotol
Scientific Name: Dasylirion longissimum Lem.
Synonym: Dasylirion quadrangulatum
Family: Agavaceae

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Recommended Temperature Zone: sunset: 11-24 USDA: 8b-11 Frost Tolerance: Hardy to 20°F (-6°C) Heat Tolerance: Excellent Sun Exposure: Full sun to shade Origin: Eastern Mexico (Coahuila, Tamaulipas, San Luis Potosi) Growth Habits: Evergreen trunk forming shrub, slowly up to 12 feet tall (3.6 m), 8 feet in diameter (2.4 m); leaves up to 4 feet long (1.2 m), 0.24 inch across (6 mm) Watering Needs: Little water when established, needs good drainage Propagation: Seeds

Blooming Habits:
In summer, the plant generates hundreds of brownish-yellow flowers on a long spike that can reach 15 feet (4.5 m).