Species · genus Yucca · Asparagaceae

Giant Spanish Dagger

Yucca carnerosana (Trel.) McKelvey

Growth habit

shrub or tree

Native range

Mexico Northeast

Reference · Y. carnerosana

Cultivars of Y. carnerosana

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

No named cultivars catalogued under Y. carnerosana 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 carnerosana is a tree-form yucca native to the arid uplands of northeastern Mexico, built to store water and endure drought. Give it the brightest spot you have, ideally direct sun, and a gritty, fast-draining mix. Water deeply but infrequently, only once the soil has dried out completely several inches down — when in doubt, wait longer.

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

7–33 °C

Soil mix

Gritty, fast-draining cactus mix

Propagation

Seed; occasional offsets

Fertilizing

Sparse cactus feed in the growing season

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.

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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 Giant Spanish Dagger 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.