Calathea 'Flamestar' (Calathea Flamestar) care

Light

Bright but filtered. Calathea 'Flamestar' burns within days in unfiltered south-facing summer sun, and stops growing within months in deep shade. Bright, indirect light is ideal. It tolerates medium and lower indirect light but grows slower and shows less pattern. Keep out of direct sun, which scorches and fades the foliage and can trigger curling. An east-facing window or a few feet back from a brighter window works well. If you only have a south window, set the plant back 1.5 m or hang a sheer curtain — both knock the intensity down into the right range.

Watering

Watering calathea 'flamestar': roughly weekly; water when the top 2-3 cm (about 1 inch) of soil feels dry. The number that matters isn't the day of the week — it's how dry the top 2-3 cm of the pot feels. A finger in the soil tells you more than a watering app. After every watering, tip the saucer. Keep the mix lightly and evenly moist, never soggy or bone dry. Use distilled water, filtered water or rainwater, as Calathea are sensitive to chlorine, fluoride and salts in tap water that cause brown leaf tips. Reduce watering in winter and always let excess drain away.

Soil and pot

Calathea 'Flamestar' grows best in light, well-draining, organic-rich aroid-style or peat-based mix. Use an airy, moisture-retentive blend such as peat or coco coir with perlite and a little orchid bark or compost. It should hold some moisture without staying waterlogged. A pot with drainage holes is essential to prevent root rot. 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 'Flamestar' sits happiest at around Above 50-60%, ideally 60%+ humidity and 18-27 C (ideal 18-24 C); avoid below 15 C (64-81 F (ideal 64-75 F); avoid below 59 F). High humidity is the make-or-break factor. In dry household air the wavy leaf edges turn brown and brittle. Raise humidity with a humidifier, a pebble-and-water tray or by grouping with other plants. Misting helps temporarily but a humidifier is far more reliable. 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 'flamestar' sparingly. Feed every 4-6 weeks during the spring and summer growing season with a balanced liquid houseplant fertiliser diluted to a quarter or half strength to avoid fertiliser burn and salt build-up. Stop feeding in autumn and winter when growth slows. Flush the soil occasionally to clear accumulated salts. 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 'flamestar' in the Growli community. Each is annotated with the most common cause so you know where to start.

• Brown, crispy leaf edges and tips — Usually low humidity and/or minerals (chlorine, fluoride, salts) in tap water. Raise humidity above 50-60% and switch to distilled, filtered or rainwater.
• Curling or rolling leaves — A sign of underwatering, dry air or too much direct sun. Check that the soil has not dried out fully, increase humidity and move out of direct light.
• Yellowing leaves or mushy stems (overwatering) — Soggy soil and poor drainage lead to root rot. Let the top 2-3 cm dry before watering, use a draining pot and never leave the plant sitting in water.
• Spider mites — Thrive in warm, dry air and show as fine webbing and stippling on leaf undersides. Raise humidity and treat by wiping leaves and applying insecticidal soap or neem oil.
• Faded pattern or leggy growth — Too little light dulls the markings and slows growth. Move to brighter indirect light, but never harsh direct sun.
• Leaves not opening or staying closed — Often just the normal day-night prayer movement, but persistent closure with stress signs points to low light, dryness or shock after repotting; stabilise conditions.

Propagation

Propagate by division of the rhizome clump, ideally in spring when repotting. Gently tease apart the root ball into sections, each with its own roots and a few leaves, and pot up separately. Keep divisions warm, humid and lightly moist while they re-establish. Calathea do not propagate reliably from leaf or stem cuttings. 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 'Flamestar' is pet-safe. The ASPCA lists Calathea (Calathea spp., family Marantaceae) as non-toxic to cats, dogs and horses, and 'Flamestar' (Goeppertia veitchiana, a renamed Calathea) is not an aroid so contains no calcium oxalates. The exact cultivar is not individually listed; the genus entry covers it and no Calathea is listed as toxic, but if a pet eats a large amount, mild self-limiting stomach upset is possible, so verify with your vet if concerned. 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 'Flamestar' deep-dive guides

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

• Calathea 'Flamestar' watering schedule
• Calathea 'Flamestar' light requirements
• Best soil mix for calathea 'flamestar'
• Calathea 'Flamestar' fertilizing guide
• When to repot calathea 'flamestar'
• How to propagate calathea 'flamestar'
• Calathea 'Flamestar' growth rate & size
• Calathea 'Flamestar' cold hardiness
• Calathea 'Flamestar' temperature & humidity
• Is calathea 'flamestar' toxic to cats & dogs?

Related guides

Calathea 'Flamestar' is also known as Calathea Flamestar, Flamestar prayer plant, Flamestar calathea, and Goeppertia 'Flamestar'.

• Types of calathea — varieties identified, with care and pet-safety
• Snake plant care — light, water and common problems
• Dracaena care — light, water and common problems
• Peperomia care — light, water and common problems
• All 609 plant care guides in the Growli library