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Dasylirion longissimum

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Dasylirion longissimum Lem.

Family Name: Asparagaceae
Common Name: Mexican Grass Tree

Name

Family Name
Genus Epithet
Species Epithet
Name Authority
Common Names

Classifications and Characteristics

Plant Growth Form Succulent Plant

Biogeography

Native Distribution Mexico
Native Habitat Terrestrial (Desert / Semi-Desert)
Preferred Climate Zone Desert / Arid
Local Conservation Status Non-native (Horticultural / Cultivated Only)

Description and Ethnobotany

Growth Form Rosette-forming succulent forming a round, fountain-like shape.
Trunk Mature individuals have a trunk that grows up to 4.5 m tall. The trunk is covered by the leaf bases.
Foliage Thick, 4-sided leaves are very narrow and long (up to 1.8 m long). The leaf is completely spineless, but the edge can be sharp. The crown of mature plants is composed of hundreds of leaves.
Flowers The tall, spike-like inflorescence (up to 4.5 m tall) is composed of a large number of racemes which occur within the bracts. Bright red buds open to form white flowers.
Cultivation This species is highly tolerant of drought and heat. It tolerates partial shade, but may become leggy. When the trunk is pruned of the older, lower leaves, the remaining leaf bases create an ornamental pattern. It is adapted to a hot, dry environment, but has some tolerance to moisture and humidity when planted in a very well-draining soil.

Landscaping Features

Desirable Plant Features Ornamental Form
Landscape Uses Container Planting
Thematic Landscaping Rockery / Desert Garden
Usage Hazard - Cons Remarks The edge of the leaf blade is sharp and should be handled carefully.

Plant Care and Propagation

Light Preference Full Sun
Water Preference Little Water
Rootzone Tolerance Drought Tolerant, Well-Drained Soils
Propagation Method Seed

Foliar

Mature Foliage Colour(s) Green
Mature Foliage Texture(s) Smooth
Foliar Type Simple / Unifoliate
Foliar Arrangement Along Stem Rosulate / Rosette
Foliar Attachment to Stem Sessile
Foliar Shape(s) Non-Palm Foliage (Linear)
Foliar Venation Parallel
Foliar Margin Entire

Floral (Angiosperm)

Flower & Plant Sexuality Bisexual Flowers
Flower Colour(s) White
Flower Grouping Cluster / Inflorescence
Flower Location Terminal
Flower Symmetry Radial
Individual Flower Shape Tubular
Inflorescence Type Remarks A fascicle of racemes arranged in a spike-like inflorescence.

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Others

Master ID 31943
Species ID 6345
Flora Disclaimer The information in this website has been compiled from reliable sources, such as reference works on medicinal plants. It is not a substitute for medical advice or treatment and NParks does not purport to provide any medical advice. Readers should always consult his/her physician before using or consuming a plant for medicinal purposes.
Species record last updated on: 20 August 2021.
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