How often does it bloom?

It typically blooms after 10 to 30 years of growth.

Does it need much water?

No, it is highly drought tolerant and prefers dry soil.

Plant guide

Century plant.

Agave americana

Pronounced uh-GAH-vee uh-mer-ih-KAH-nuh

Also known as American agave, American century plant, American-aloe, Centuryplant

American century plant — Photo by zebedeugalinha (CC BY) via iNaturalist

The Century plant is a striking succulent known for its massive, architectural rosette of spiky leaves. It grows slowly over many years before producing a single, towering flower stalk. It is a perfect choice for those who love desert aesthetics and have plenty of space.

Another photo of Century plant — Photo by Michael J. Papay (CC BY) via iNaturalist

At a glance

Care level: Easy
Plant type: Succulent
Light: Full sun
Indoor light: Direct sun
Water: Every 14 to 30 days
Mature size: 6 to 10 feet tall and wide
Growth rate: Slow
Hardiness: USDA 8 to 11
Bloom time: Late spring to summer

Care

Give this plant as much sun as you can and ensure the soil drains very quickly to prevent rot. Watch for mushy leaves or a darkening base, which are common signs of overwatering. It is very drought tolerant once established, so you can let it dry out completely between drinks.

Watering: Allow the soil to dry out completely between waterings to avoid root rot.
Feeding: Feed with a balanced liquid fertilizer diluted to half strength during the active growing season.
Pruning: Remove dead or damaged lower leaves as needed using clean, sharp shears.
Repotting: Repot only when the plant becomes rootbound, which is infrequent due to its slow growth.
Soil: Sandy, well-draining cactus mix
Soil pH: 6.0 to 7.5
Temperature: -9 to 45°C
Humidity: 10 to 40%
Drought tolerance: High
Lifespan: Perennial, typically 10 to 30 years before flowering.
Deer and rabbits: High

Signs it needs repotting

Roots growing out of the drainage holes.
The plant becomes top heavy and unstable.
Growth slows significantly over several seasons.

Safety

People: The sap contains calcium oxalate crystals that cause severe skin irritation and burning if ingested.
Pets: This plant is toxic to cats and dogs if ingested, as it contains calcium oxalate crystals.
Children: The extremely sharp terminal spines pose a significant injury risk to children who touch the plant.
Contact allergens: The sharp marginal spines can cause puncture wounds, and the sap is a potent skin irritant.
Airborne allergens: The pollen can cause mild irritation for those with sensitive respiratory systems.
Edibility: The raw sap is highly irritating and the plant requires specific processing to be safely consumed.

How to identify it

Large, fleshy, blue-green leaves
Sharp spines along leaf margins
Sturdy terminal spine at leaf tip
Forms a wide, basal rosette

Height: 1.8 to 3m
Spread: 1.8 to 3m
Leaves: blue-green, gray-green, evergreen
Flowers: yellow, green, 5 to 10cm
Fruit: black, Autumn

Problems to watch for

Agave Snout WeevilCommon
Root RotCommon
MealybugsUncommon
Scale InsectsUncommon
Soft RotUncommon
Leaf SpotRare

By symptom

Plant problems by symptom

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Growing it

Propagation: offsets, seed
When to plant: spring, early summer
Overwintering: Keep the plant as dry as possible during cold months to prevent rot. If growing in a pot, move it to a sheltered location away from freezing rain.
In containers: It grows well in large, heavy pots that prevent tipping, but it will eventually outgrow most containers.

Offsets

1. Identify pups growing at the base of the mother plant.
2. Carefully dig around the pup to expose the connection.
3. Sever the connection with a clean, sharp knife.
4. Let the cut end callus over for a few days.
5. Plant in well draining soil.

Group this plant with other succulents that do not require frequent irrigation to prevent rot.

Grows well with

Desert Spoon · They share similar water and light requirements in a xeriscape garden.
Red Yucca · This plant provides a nice color contrast and thrives in the same dry conditions.

Similar species

Agave parryi · It is a more compact agave species suitable for smaller gardens.

Science

Family: Asparagaceae
Genus: Agave
Order: Asparagales
Class: Liliopsida
Native range: Mexico and the southern United States.
Conservation: This species is widely naturalized and not considered at risk in its current range.

It thrives in rocky, well drained soils where it stores water in its thick leaves to survive long dry spells.

Value to wildlife: nectar source
Pollinators: bees, butterflies, hummingbirds
Uses: ornamental focal point, xeriscaping, fiber production

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 4/9
Soil reaction: 6/9
Light: 8/9
Temperature: 8/9
Moisture: 2/9
Nutrients: 3/9

Taxonomy resolved against GBIF.

Questions people ask

How often does it bloom?: It typically blooms after 10 to 30 years of growth.
Does it need much water?: No, it is highly drought tolerant and prefers dry soil.

Where the name comes from

The name Agave comes from the Greek word for noble, while americana refers to its presence in the Americas.

Good to know

It is monocarpic, meaning it dies after flowering once.
The flower stalk can reach heights of up to 8 meters.
It has been used for centuries to produce fermented beverages like pulque.
The leaves contain strong fibers used for cordage.
It is a symbol of resilience in arid landscapes.

Also in

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This guide was generated with AI on September 26, 2026 and checked against GBIF taxonomy. It is general information, not horticultural or veterinary advice. Read about how we build these guides.