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Whale's Tongue Agave (Agave ovatifolia), whole plant
  • Whale's Tongue Agave — close-up of leaves and flowers
  • Whale's Tongue Agave — seasonal appearance
  • Whale's Tongue Agave in a garden setting

Whale's Tongue Agave

Agave ovatifolia

Easy · Beginner friendly

About Whale's Tongue Agave

Whale's Tongue Agave is a hardy Mexican rosette succulent reaching 3-4 feet tall and 4-5 feet wide, prized for its broad cupped powder-blue leaves that resemble a whale's tongue. Discovered only in 1996 in Nuevo León, it is among the most cold-hardy of all blue agaves, surviving down to 0°F. Its symmetrical form and luminous blue color make it a sculptural showpiece for gardens from Texas and the Southwest to the Southeast.

  • Drought-tolerant
  • Cold-hardy
  • Evergreen
  • Architectural
WATER
Regular
Top inch dry
LIGHT
Full sun
6+ hrs direct
HARDY
Hardy to 0°F (-18°C)
USDA hardiness zones 7–11

How to care for Whale's Tongue Agave

Watering

  • Springevery 21 days
  • Summerevery 21 days
  • Fallevery 30 days
  • Winterevery 60 days

Soil · Fast-draining

  • Main mixSand + pumice + soil 1:1:150%
  • DrainagePumice / gravel50%

Keep grit at half the mix or more — this soil is meant to dry out fast.

FERTILIZER

  • Springevery 60 days
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At a Glance

  • NativeNorth America
  • Height2–3 ft (0.6–0.9 m)
  • Spread4–5 ft (1.2–1.5 m)
  • Flower colorGreen
  • Foliage colorBlue-green
  • SoilSandy, Well-drained
  • LocationsYard

Bloom time

BLOOM CYCLE

Peak bloom

Jun–Aug

J
F
M
A
M
J
J
A
S
O
N
D

Greenish-yellow flowers on 12-14 ft stalk after 15+ years

Toxicity

Humans Moderate · Pets Moderate

calcium oxalate raphides and saponins

Moderate

  • Leaf
  • Sap
  • Contact
  • Ingestion

EXPOSURE Touching leaves and sap. Eating leaves and sap.

EFFECT Contact dermatitis and mucous membrane irritation.

NOTE Documented concern for humans: Contact dermatitis and mucous membrane irritation.

Moderate

  • Leaf
  • Sap
  • Ingestion

EXPOSURE Eating leaves and sap.

EFFECT Oral irritation and vomiting.

NOTE Agave listed by ASPCA as toxic.

Moderate

  • Leaf
  • Sap
  • Ingestion

EXPOSURE Eating leaves and sap.

EFFECT Oral irritation and vomiting.

NOTE Agave listed by ASPCA as toxic.

Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.

DISTRIBUTION

Whale's Tongue Agave · Native
  • Native
  • North America

History

Illustrated historical scene for Whale's Tongue Agave

Agave ovatifolia, whale's tongue agave, is a striking monocarpic succulent endemic to limestone slopes of the Sierra Madre Oriental in the state of Nuevo León, northeastern Mexico, at 1000-2200 meters elevation. American botanist Greg Starr and Mexican botanist José Ángel Villarreal-Quintanilla formally described the species in 2002 in Cactus and Succulent Journal, making it one of the most recently named major ornamental agaves. Plants form exceptionally symmetrical 90-120 cm tall and 1.5-1.8 meter wide rosettes of broad, cupped, glaucous powder-blue leaves shaped somewhat like a whale's tongue (ovatifolia means oval-leaved).

Leaves carry regular marginal teeth and a short terminal spine. Greenish-yellow flowers on a 4-5 meter stalk appear after 10-20 years.

The species is notable among ornamental agaves for its hardiness—reliably surviving to about -12°C (10°F)—which has made it popular in Texas, the Southwest, and even southern Midwest American landscapes well beyond the typical agave range. Its remarkable cold hardiness has revolutionized agave gardening in colder regions—it now grows successfully as far north as Pennsylvania and Washington state with sharp drainage.

Symbolism & meaning

What It Symbolizes

Whale's Tongue Agave is strength carved into silver-blue blades that shrug off both desert sun and surprising hard freezes. A plant of recent discovery — formally described only in 2002 — it has reshaped what cold-climate succulent gardening can be, opening new northern territory to architectural agaves. It stands for the quiet thrill of finding something rugged and magnificent that the world had simply not yet named.

  • Strength — survives extreme cold and heat
  • Discovery — a recently described species reshaping cold-climate succulent gardening

Where the Name Comes From

The name Whale's Tongue Agave describes its broad tongue-shaped leaves. 'Ovatifolia' means egg-shaped leaves, referring to the broad rounded leaf form.

Uses & Fun Facts

  • Sculptural powder-blue rosette anchors modern xeriscape compositions
  • Cold-hardy architectural succulent for rock and gravel gardens

Related plants

More Agave plants

Plants with similar care

Frequently asked questions

How often should I water Whale's Tongue Agave?

In summer, water about every 21 days; in winter, about every 60 days. Adjust for heat, pot size and drainage.

How much light does Whale's Tongue Agave need?

Full sun: 6+ hrs direct. Watch the leaves — scorching or stretching means the light needs adjusting.

Is Whale's Tongue Agave toxic to cats or dogs?

Pets Moderate (Dogs Moderate · Cats Moderate) Educational information, not medical or veterinary advice. If exposure is suspected, contact a doctor or veterinarian.

Is Whale's Tongue Agave easy to grow?

Yes — it is considered an easy, beginner-friendly plant.

When does Whale's Tongue Agave bloom?

It typically blooms Jun–Aug in the Northern Hemisphere.

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