Plant care
Calathea (prayer-plant cousin) care
Calathea (Goeppertia) spp.
Also called prayer-plant cousin, peacock plant, rattlesnake plant.
Light
Calathea prefers the middle of the household lighting range — bright enough to read by all day, but never in the direct path of midday sun. Medium indirect light, strictly no direct sun. Too much light fades the patterns; too little slows the daily leaf movement. A useful test: hold your hand a few centimetres above the leaves at noon. A faint hand shadow means good light; a sharp dark shadow means direct sun and likely too much for this species.
Watering
Water calathea when the top 1-2 cm of soil is just dry, every 4-7 days. The actual day count varies with pot size, light level, and the season — the finger test (or, better, lifting the pot to feel its weight) is more reliable than a calendar. Empty any drainage saucer after watering so the pot is never sitting in water. Keep evenly moist with rainwater or filtered water. Tap-water minerals are the single biggest cause of crispy calathea leaves.
Soil and pot
Calathea grows best in moisture-retentive aroid mix. Standard potting compost with added coconut coir and perlite. Avoid letting soil dry out completely. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.
Humidity and temperature
Calathea sits happiest at around 60-80% humidity and 18-24°C (65-75°F). High humidity is essential. A humidifier is the most reliable solution. If you keep the room above 18 year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.
Fertilising
Feed calathea sparingly. Quarter-strength balanced liquid feed every 4-6 weeks during the growing season. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.
Common problems
Below are the issues we see most often on calathea in the Growli community. Where a problem matches one of our diagnostic guides, click through for the full step-by-step recovery plan written for calathea specifically.
- Brown crispy edges — Tap-water minerals or low humidity.
- Curling leaves — Low humidity or underwatering.
- Yellow leaves — Overwatering or root rot.
- Faded patterns — Too much direct light; move to a shadier spot.
Companion plants
Calathea pairs well with Prayer plant, Peace lily, and Ferns. These are species with similar light and water needs, so you can group them in the same room or on the same shelf and water as a batch.
Propagation
Divide the rhizome at repotting in spring; each division must have several leaves and its own root system. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.
Toxicity to pets
Calathea is pet-safe. ASPCA lists Calathea as non-toxic to cats and dogs. One of the safest tropicals for pet households. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).
Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.
Calathea care — frequently asked questions
What is the common name for Calathea (Goeppertia) spp.?
Calathea (Goeppertia) spp. is most commonly called Calathea, but it is also known as prayer-plant cousin, peacock plant, rattlesnake plant. The names refer to the same species, so care instructions for Calathea apply identically to anything sold as prayer-plant cousin.
How much light does calathea need?
Calathea grows best in medium indirect light (a couple of metres from a window). Medium indirect light, strictly no direct sun. Too much light fades the patterns; too little slows the daily leaf movement.
How often should I water calathea?
Water calathea when the top 1-2 cm of soil is just dry, every 4-7 days. Keep evenly moist with rainwater or filtered water. Tap-water minerals are the single biggest cause of crispy calathea leaves. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.
Is calathea toxic to cats and dogs?
Calathea is pet-safe. ASPCA lists Calathea as non-toxic to cats and dogs. One of the safest tropicals for pet households.
What USDA hardiness zone does calathea grow in?
Calathea is rated for USDA zone 11-12 (indoor-only) and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.
Calathea deep-dive guides
Every aspect of calathea care, each with its own calibrated guide:
- Calathea watering schedule
- Calathea light requirements
- Best soil mix for calathea
- Calathea fertilizing guide
- When to repot calathea
- How to propagate calathea
- Calathea growth rate & size
- Calathea cold hardiness
- Calathea temperature & humidity
- Is calathea toxic to cats & dogs?
Related guides
Calathea is also known as prayer-plant cousin, peacock plant, and rattlesnake plant.
- Calathea care — the deep-write article with seasonal care notes
- Diagnose calathea symptoms — yellow leaves, drooping, brown spots, and more
- Monstera care — light, water and common problems
- Pothos care — light, water and common problems
- Fiddle leaf fig care — light, water and common problems
- All 200 plant care guides in the Growli library