Thimble Cactus.

De un vistazo

Care level

Easy

Plant type

Succulent

Light

Full sun

Indoor light

direct

Water

Every 14 to 30 days

Mature size

10 to 15 cm

Growth rate

slow

Hardiness

USDA 9 to 11

Bloom time

Late winter to spring

Cuidados

Provide plenty of bright, direct sunlight to keep the stems compact and healthy. Allow the soil to dry out completely between waterings to prevent root rot. Watch for soft or mushy stems, which indicate the plant is receiving too much moisture.

Watering

Water deeply only when the soil is completely dry.

Feeding

Use a balanced cactus fertilizer during the active growing season.

Pruning

Only prune to remove dead or damaged stems.

Repotting

Repot only when the cluster outgrows its container.

Soil

Well-draining cactus and succulent mix

Soil pH

6.0 to 7.5

Temperature

5 to 35°C

Humidity

10 to 40%

Drought tolerance

high

Lifespan

Perennial, typically 5 to 10 years.

Deer and rabbits

high

Seguridad

People

The plant is generally non toxic but the spines can cause mechanical irritation to the skin.

Pets

This plant is generally considered non-toxic to cats and dogs, though the spines can cause mechanical irritation.

Children

Keep this plant out of reach of small children because the sharp spines can easily puncture skin if handled.

Contact allergens

The spines can cause minor skin irritation or dermatitis in sensitive individuals.

Airborne allergens

There are no known significant respiratory allergens associated with this species.

Edibility

This plant is not considered edible and ingestion may cause gastrointestinal distress.

Cómo identificarla

• Small cylindrical stems
• Dense white radial spines
• Clustering growth habit
• Tiny cream colored flowers

Height

0.05 to 0.15m

Spread

0.05 to 0.2m

Leaves

green, evergreen

Flowers

cream, yellow, 1 to 2cm

Problemas frecuentes

• Mealybugs — These small white insects hide in the crevices between tubercles and suck sap from the plant.
• Root rot — This occurs when the soil stays too wet for too long, causing the roots to decay.

Cómo cultivarla

Propagation

offsets, cuttings

When to plant

spring, summer

Overwintering

Keep the plant in a cool, dry place and stop watering almost entirely during the winter months to encourage dormancy.

In containers

It grows very well in pots and prefers a shallow container with excellent drainage, at least 4 inches wide.

Group plants with similar water needs together to avoid overwatering your cactus while trying to keep other plants happy.

Buenas compañeras

• Echeveria — They share similar requirements for bright light and infrequent watering.
• Aloe — This succulent provides a nice structural contrast while thriving in the same dry conditions.

Mantenla lejos de

• Ferns — Ferns require high humidity and consistent moisture that would kill this cactus.

Especies parecidas

• Mammillaria elongata — It has a similar clumping habit but with longer, more elongated stems.

Ciencia

Family

Cactaceae

Genus

Mammillaria

Order

Caryophyllales

Class

Magnoliopsida

Native range

Central Mexico.

Conservation

This species is not currently listed as endangered, but wild collection should always be avoided to protect native populations.

It grows in rocky, well drained soils in arid environments where it relies on its ability to propagate via fallen offsets.

Value to wildlife

nectar source

Pollinators

bees

Uses

ornamental houseplant, rock garden specimen, succulent collection

Taxonomía cotejada con GBIF.

Lo que más preguntan

How often should I water my Thimble Cactus?

Water it thoroughly only when the soil has dried out completely, which is usually every 2 to 3 weeks.

Why are the offsets falling off?

That is perfectly normal behavior for this species as it is how it spreads in the wild.

De dónde viene el nombre

Mammillaria comes from the Latin word mamilla, meaning nipple, referring to the tubercles on the plant. The name gracilis means slender, while fragilis highlights the plant's tendency to break apart.

Bueno saberlo

• The specific epithet fragilis refers to the fragile nature of its offsets.
• It is commonly known as the Thimble Cactus due to its small, cylindrical shape.
• It produces tiny, cream colored flowers that appear in a ring around the top of the stem.
• The offsets fall off so easily that they often root in the soil right next to the parent plant.