common yucca (Yucca filamentosa) — identification, habitat & look-alikes

Common yucca is an evergreen plant native to the southeastern United States, with curly white threads along its leaf edges. Yucca moths pollinate its cream-colored, bell-shaped flowers, which hang from tall stalks. It is also called Adam's needle.

Appearance

Appearance: An evergreen clump of sword-shaped leaves with curly white threads along their edges.
Flowers: Cream-colored, bell-shaped flowers hang from a tall branching stalk.
Flowering time: In North Carolina, it blooms from late April to early June.

Look-alikes

Weak-leaf yuccaYucca flaccida

Weak-leaf yucca has narrower, more flexible leaves that often droop. Common yucca has broader, stiffer leaves, but garden plants can be difficult to separate from photos.

Spanish daggerYucca gloriosa

Spanish dagger eventually develops a visible woody trunk and has stiff, sharply pointed leaves. Common yucca usually stays as a low leaf clump with loose white threads along the edges.

Where it lives

Typical habitats: Sandy open ground
Coastal plain
Gardens
Range: Native to the southeastern United States, including North Carolina and nearby coastal states.
Preferred conditions: Grows in sun or partial shade and needs well-drained soil.
Flowering: Flowers Apr–Jun
Flowers Apr–Jun

Life cycle

Reproduction: In its native range, yucca moths pollinate the flowers and their caterpillars eat some developing seeds.

Growing it

Care: Suitable for sunny, well-drained gardens in 4–10.
Toxicity: Toxic to dogs, cats, and horses.

Name and classification

About the name: Some botanists treat weak-leaf yucca (Yucca flaccida) as part of common yucca; others consider it a separate species.
Varieties and forms: Garden selections include yellow or cream-striped leaves.

Conservation

IUCN Red List: LCLeast ConcernLow risk of extinction

Culture and stories

Culture and stories: The name Adam's needle refers to the pointed leaves and the threads along their edges.

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