How much light does it need?

It prefers low to medium indirect light and will scorch in direct sun.

How often should I water it?

Water when the top few centimeters of soil feel dry to the touch.

Plant guide

Cast iron plant.

Aspidistra elatior

Pronounced as-pi-DIS-tra e-LAY-tee-or

Also known as Cast iron plant, Cast-iron-plant, barroomplant, cast-iron plant

The cast iron plant is a true survivor that handles neglect better than almost any other houseplant. It thrives in dim corners where other plants might struggle to stay alive. You will love how its deep green foliage brings a touch of elegance to low light spaces.

Another photo of Cast iron plant — Photo by Miha Jurić (CC BY) via iNaturalist

At a glance

Care level: Easy
Plant type: Perennial evergreen
Light: Low to medium indirect light.
Indoor light: Low light
Water: Every 7 to 14 days
Mature size: 2 to 3 feet tall.
Growth rate: Slow
Hardiness: USDA 7 to 10
Bloom time: Late winter to early spring

Care

Keep the soil slightly moist but never soggy to prevent root rot. Wipe the leaves with a damp cloth occasionally to remove dust and help the plant breathe. Watch for brown tips which usually indicate the air is too dry or the water quality is poor.

Watering: Allow the top half of the soil to dry out completely before watering again.
Feeding: Feed with a balanced liquid fertilizer during the active growing season.
Pruning: Trim away any yellow or damaged leaves at the base to keep the plant looking tidy.
Repotting: Only repot when the plant becomes severely root bound as it prefers to be snug.
Soil: Well draining peat based potting mix.
Soil pH: 6.0 to 7.0
Temperature: 5 to 25°C
Humidity: 40 to 60%
Drought tolerance: Moderate
Lifespan: Perennial, can live for several decades.
Deer and rabbits: High

Signs it needs repotting

Roots growing out of the drainage holes
Water running straight through the pot
Stunted growth over several years

Safety

People: The plant is generally considered non toxic to humans, though ingestion is not recommended.
Pets: This plant is non-toxic to cats and dogs.
Children: The large, stiff leaves can be sharp if torn, and the plant is a potential choking hazard for small children.
Edibility: This plant is not considered edible and may cause stomach upset if ingested.

How to identify it

Dark green leathery lance shaped leaves
Sturdy upright growth habit
Slow growing rhizomatous root system
Small bell shaped flowers near soil

Height: 0.6 to 0.9m
Spread: 0.45 to 0.6m
Leaves: dark green, evergreen
Flowers: purple, brown, 2 to 3cm

Problems to watch for

By symptom

Check your cast iron plant from a photo

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Growing it

Propagation: division
When to plant: spring, early autumn
Overwintering: If kept outdoors in colder regions, bring the container inside before the first frost. Keep the soil slightly drier during the winter months.
In containers: It is an excellent container plant that thrives in a pot for many years without needing frequent repotting.

Division

Remove the plant from its pot during the spring.
Gently tease the root ball apart into smaller sections.
Ensure each section has at least two or three leaves.
Repot the divisions into fresh, well draining potting mix.
Water lightly and keep in a shaded area until established.

Group this plant with other shade lovers to create a lush, low maintenance woodland display.

Grows well with

Ferns — They share similar shade and moisture requirements.
Hostas — They provide a nice contrast in leaf texture in shady garden beds.

Similar species

Milky Way Aspidistra — It has the same growth habit but features white spots on the leaves.

Science

Family: Asparagaceae
Genus: Aspidistra
Order: Asparagales
Class: Liliopsida
Native range: Eastern Asia, specifically Japan and Taiwan.
Conservation: This species is not currently listed as endangered or threatened in its native range.

It thrives in the deep shade of forest floors, where it spreads slowly via rhizomes.

Value to wildlife: ground level pollinator access
Pollinators: beetles
Uses: indoor foliage, shade garden groundcover, container plant

Through the year

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Flowering

Fruiting

Foliage

Ecological indicators

Salinity: 1/9
Soil reaction: 5/9
Light: 2/9
Temperature: 5/9
Moisture: 4/9
Nutrients: 3/9

Taxonomy resolved against GBIF.

Questions people ask

How much light does it need?: It prefers low to medium indirect light and will scorch in direct sun.
How often should I water it?: Water when the top few centimeters of soil feel dry to the touch.

Where the name comes from

The name Aspidistra comes from the Greek word for small round shield, referring to the shape of the flower, while elatior means taller.

Good to know

It was a staple in Victorian homes because it tolerated coal smoke and low light.
The flowers grow at the soil surface, often hidden by the foliage.
It is a slow grower that can live for decades.
The leaves are often used in Japanese floral arrangements.

Also in

Low-light houseplants

Keep your cast iron plant growing

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