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Rattlesnake Plant
Calathea lancifolia
Care level: Moderate
The wavy, dark-blotched pattern running along each long leaf of Calathea lancifolia gives it a strikingly snake-skin look, which is exactly where its common name comes from, while botanists have since moved it into the genus Goeppertia along with most of its former Calathea relatives.
Medium, indirect light suits it best; too much direct sun bleaches and burns the patterned leaves.
Water
Keep soil consistently moist using filtered or rain water, watering about weekly; avoid letting it dry out fully.
Humidity
Needs high humidity, ideally above 60%, to keep leaf tips from browning.
Soil
Loose, well-draining potting mix rich in organic matter.
Temperature
18-24°C, away from cold draughts.
Size
23-50cm tall and 23-45cm wide.
Growth speed
Fast
Best position
north / north-east-facing windowanywhere up to about 2 m from the window
east-facing windowabout 1 m from the window or further back
west-facing windowabout 2 m from the window or further back
Watch for strong direct sun at east / west windows.
See every window directionHide window directions
Best position
right by the window
about 1 m
about 2 m
about 4 m
4 m or more
north
works well✓
works well✓
works well✓
just about~
just about~
north-east
works well✓
works well✓
works well✓
just about~
just about~
east
just about~
works well✓
works well✓
works well✓
works well✓
south-east
too much direct sun☼
just about~
just about~
works well✓
works well✓
south
too much direct sun☼
too much direct sun☼
too much direct sun☼
just about~
works well✓
south-west
too much direct sun☼
too much direct sun☼
just about~
works well✓
works well✓
west
too much direct sun☼
too much direct sun☼
works well✓
works well✓
works well✓
north-west
too much direct sun☼
just about~
works well✓
just about~
just about~
✓works well~just about○too dark☼too much direct sun
A rough guide based on window direction and typical daylight through the year. Window size, curtains and whatever stands outside matter just as much.
✓Non-toxic to pets
Considered non-toxic to cats and dogs.
Source: ASPCA
Did you know?
Like other prayer-plant relatives, Rattlesnake Plant lifts and folds its long leaves upward each night and lowers them again by morning, a movement powered by small swollen joints at the base of each leaf rather than by anything to do with light levels alone.
Care by Season
Spring
Resume regular watering and start light feeding as new leaves unfurl.
Summer
Maintain high humidity with misting or a humidifier and keep soil evenly moist.
Autumn
Ease off feeding and slightly reduce watering frequency.
Winter
Water a little less, avoid cold drafts, and keep humidity levels up indoors.
Growing & Maintenance
Soil and pot
A loose, well-draining potting mix rich in organic matter, in a pot with drainage holes.
Fertilising
A balanced feed once a month in spring and summer. Ease off in autumn.
Propagation
By dividing the clump when you repot in spring.
Pests & Diseases
Common problems
Brown leaf tips
Most likely cause: Humidity below 60%, or mineral build-up from tap water.
What to do: Run a humidifier nearby and water with filtered or rain water.
Curling leaves
Most likely cause: Dry compost or dry air.
What to do: Water straight away and do not let the compost dry out fully.
Bleached or burnt leaves
Most likely cause: Direct sun.
What to do: Move it to medium, indirect light.
Yellow leaves and a mushy base
Most likely cause: Soggy compost and root rot.
What to do: Trim the rotten roots and repot in fresh, loose mix.
Leaves folding upward at night
Most likely cause: Normal for this plant.
What to do: Nothing to do.
Pests & Diseases
Spider mites
Signs: Fine webbing and speckled, dull leaves in dry conditions
Treatment: Increase humidity, rinse leaves, and use insecticidal soap if needed. Check the undersides of the leaves and the crevices where the leaf stem meets the main stalk.
Mealybugs
Signs: White cottony clusters along stems and leaf undersides
Treatment: Dab with rubbing-alcohol soaked cotton swab, repeating weekly. Check the undersides of the leaves and the crevices where the leaf stem meets the main stalk.
Root rot
Signs: Wilting and blackened roots despite consistently moist soil
Treatment: Remove from soggy soil, trim rotten roots, and repot in fresh, well-draining mix.
FAQ
Is Rattlesnake Plant the same as a Calathea?
It's part of the same closely related prayer-plant group, though taxonomists have reclassified it from Calathea lancifolia to Goeppertia insignis; nurseries and plant tags still commonly use the older Calathea name, so both refer to the same plant.
Why are the leaf tips on my Rattlesnake Plant browning?
Browning tips usually point to low humidity or mineral buildup from tap water, this species wants humidity above 60% and prefers filtered, distilled, or rainwater, since it's sensitive to the salts and chlorine found in most tap water.
Is the Rattlesnake Plant safe for cats and dogs?
Yes, the Rattlesnake Plant is not toxic to cats or dogs.
How often should I water a Rattlesnake Plant?
About once a week, keeping the compost consistently moist. Use filtered or rain water and never let it dry out fully.
How do I propagate a Rattlesnake Plant?
By division. Split the clump when you repot in spring, keeping roots and leaves on each piece.
How big does a Rattlesnake Plant get?
Between 23 and 50cm tall and 23 to 45cm wide. In warmth and high humidity it grows fast.
