Species · genus Yucca · Asparagaceae

Great Plains Yucca

Yucca glauca Nutt.

Also known as: Small Soapweed · Spanish Bayonet · Beargrass · Soapweed · Soapweed Yucca

Growth habit

subshrub or shrub

Native range

Alberta, Colorado, Iowa, Kansas, Missouri, Montana, Nebraska, New Mexico, North Dakota, Oklahoma, South Dakota, Texas, Wyoming

Reference · Y. glauca

Cultivars of Y. glauca

The named forms growers keep — each with its own page, each honest about how much we know.

No named cultivars catalogued under Y. glauca yet. When growers document a stable, named form, it earns its own page here.

Guide

The species-level account. Cultivar pages build on this and say where they differ.

Yucca glauca is an arid-adapted subshrub of the high plains and prairies of central North America, built for full sun, lean gritty drainage, and long dry spells. Water deeply but infrequently, only once the soil has dried out completely to several inches down, and err toward leaving it dry rather than wet. It tolerates and prefers low humidity; standing moisture and dense soil will rot the crown and roots.

Care recipe

The species record — the baseline every cultivar inherits unless it says otherwise.

Care notes are early — not yet verified

Light: ai:claude-opus-4-8
Water: ai:claude-opus-4-8 (range 14-28d)
Humidity: ai:claude-opus-4-8
Soil: ai:claude-fable-5
Care: ai:claude-fable-5

Light

Direct sun

Water

≈ every 28 days

Humidity

Low — average room

Temperature

4–32 °C

Soil mix

Sandy, gritty, fast-draining mix

Propagation

Offsets or seed

Fertilizing

Minimal — a light spring feed at most

Growth rate

Slow

Flowering

Rarely flowers indoors

ToxicityAuthoritative · species

Toxic to cats & dogs

Saponins — vomiting, drooling. This is where toxicity lives: every cultivar of this species inherits it and none can override it.

Reference images

Every image credited. Licenses link to their deeds.

No reference gallery yet

A few clear photos — habit, a mature leaf, a flower if it blooms — would give this page its eyes.

Add images

Sources: ai:claude-opus-4-8 · ai:claude-opus-4-8 (range 14-28d) · ai:claude-fable-5 · ASPCA

Kept true by its growers

Every fact here carries its source. Grow Great Plains Yucca yourself? What you’ve observed — how it drinks, how it holds its color, a name that’s off — is exactly what keeps this page honest. Contributions are reviewed before anything changes.