Rattlesnake Plant Calathea lancifolia
At a glance
- Light
- Medium indirect
- 1000–10000 lux
- Water
- Every 5–7 days
- Top 1-2cm of soil only — keep evenly moist
- Humidity
- 50–70%
- Temperature
- 18–27°C
- Ideal 18–24°C
- Soil pH
- 6–6.5
- moisture-retentive
- Mature size
- 75 cm tall
- 60 cm wide
- Native to
- Brazil, Tropical South American rainforests
- Growth
- Moderate
- Upright
Watering calculator
Estimate how often to water your Rattlesnake Plant based on pot size, light, and season.
Always check the top 2 cm of soil before watering. Calculator output is an estimate, not a schedule.
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Compare with similar plants
| Trait | Rattlesnake Plant Calathea lancifolia | Calathea Calathea orbifolia | Prayer Plant Maranta leuconeura |
|---|---|---|---|
| Light | Medium indirect | Medium indirect | Medium indirect |
| Water | 5–7 days | 5–7 days | 5–7 days |
| Pet safe | Pet-safe | Pet-safe | Pet-safe |
| Difficulty | Moderate | Challenging | Challenging |
| Mature size | 75 cm | 60 cm | 30 cm |
Light requirements in detail
Rattlesnake Plant prefers medium indirect (1000–10000 lux) . Avoid direct sun which fades the wavy patterned leaves; tolerates fairly low light but pattern intensity drops
A spot 1–2 meters from a bright east or south-facing window usually fits this range. Direct afternoon sun through unfiltered glass can scorch leaves; sheer curtains help diffuse it.
Watering in detail
Water Rattlesnake Plant every 5– 7 days during the growing season, allowing Top 1-2cm of soil only — keep evenly moist to dry between waterings. Reduce frequency in winter when growth slows.
Consistent moisture matters here — long dry spells will show up as crispy leaf edges.
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Frequently asked questions about Rattlesnake Plant
How often should I water Rattlesnake Plant?
Water Rattlesnake Plant every 5–7 days during the growing season, allowing Top 1-2cm of soil only — keep evenly moist to dry between waterings. Reduce frequency by 30–50% in winter.
What kind of light does Rattlesnake Plant need?
Rattlesnake Plant prefers medium indirect (1000–10000 lux). Avoid direct sun which fades the wavy patterned leaves; tolerates fairly low light but pattern intensity drops
Is Rattlesnake Plant toxic to cats?
Rattlesnake Plant is non-toxic to cats according to the ASPCA Animal Poison Control Center. Mild stomach upset is still possible if a cat chews the leaves, but it will not cause poisoning.
Is Rattlesnake Plant toxic to dogs?
Rattlesnake Plant is non-toxic to dogs according to the ASPCA. Mild stomach upset is still possible if a dog chews the leaves.
How big does Rattlesnake Plant grow?
Rattlesnake Plant reaches about 75 cm tall and 60 cm wide at maturity. Growth rate is moderate.