Calathea (prayer-plant cousin) care

Light

Picture the indirect light an east-facing window gives mid-morning — that's the brightness calathea grows fastest in. Medium indirect light, strictly no direct sun. Too much light fades the patterns; too little slows the daily leaf movement. You'll know it's right when new leaves come out the same size and colour as the established ones. Smaller, paler new leaves = move closer to the window.

Watering

Aim for when the top 1-2 cm of soil is just dry, every 4-7 days for calathea, but treat that as a starting point rather than a rule. A south-facing summer windowsill will dry the pot twice as fast as a north-facing winter room. Lift the pot; if it feels noticeably lighter than it did wet, water it. 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 deep-dive guides

Every aspect of calathea care, each with its own calibrated guide:

• Common calathea problems & fixes
• Calathea watering schedule
• Calathea light requirements
• Best soil mix for calathea
• Calathea fertilizing guide
• When to repot calathea
• How to propagate calathea
• How to prune calathea
• What's eating my calathea?
• Calathea growth rate & size
• Calathea cold hardiness
• Calathea temperature & humidity
• Is calathea toxic to cats & dogs?
• Is calathea toxic to cats?
• Is calathea toxic to dogs?
• All 10 Calathea varieties

Featured in these plant shortlists

Calathea qualifies for 10 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

• Best pet-safe houseplants — Houseplants the ASPCA lists as non-toxic to cats and dogs — every one verified against the ASPCA toxic and non-toxic plant list.
• Best low-light houseplants — Houseplants that need no direct sun and cope with a north-facing room or a spot well back from a window.
• Best plants for a north-facing window — Houseplants for a north-facing window: bright, even, indirect light and no scorching direct sun. Each pick verified against its documented light needs.
• Best pet-safe low-light plants — Non-toxic to cats and dogs AND happy with no direct sun — the two hardest constraints to satisfy at once.
• Best humidity-loving houseplants — Houseplants that thrive in a bathroom, kitchen, or by a humidifier — selected by documented humidity preference.
• Best bathroom plants — Humidity-loving houseplants that also cope with lower light — suited to the steamy, often-dim conditions of a typical bathroom.
• Best pet-safe bathroom plants — Non-toxic to cats and dogs and happy in the humid, lower-light conditions of a bathroom — safe greenery for the smallest room.
• Best pet-safe bedroom plants — Non-toxic to cats and dogs and happy in lower light — calming greenery for a bedroom where a pet often sleeps too.
• Best cat-safe plants — Houseplants the ASPCA lists as non-toxic to cats (and dogs) — safe greenery for a home with a curious cat.
• Best dog-safe plants — Houseplants the ASPCA lists as non-toxic to dogs (and cats) — safe greenery for a home with a curious dog.
• Browse all 30 plant shortlists — pet-safe, low-light, drought-tolerant and more

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
• Calathea yellow leaves — causes and the fix
• Calathea curling leaves — causes and the fix
• Calathea drooping — causes and the fix
• Calathea brown spots — causes and the fix
• Calathea mushy stem — causes and the fix
• Calathea no new growth — causes and the fix
• Calathea vs Prayer plant — which to choose
• Monstera vs Calathea — which to choose
• Elephant ear vs Calathea — which to choose
• Types of calathea — varieties identified, with care and pet-safety
• Ugni care — light, water and common problems
• Bignay care — light, water and common problems
• Carob care — light, water and common problems
• All 10153 plant care guides in the Growli library