Calathea care

Calatheas (now botanically Goeppertia) are grown for their painted leaves, which fold up at night like hands in prayer. They are safe for pets but have a reputation for being fussy: they want steady moisture, humid air and soft water.

Light

Medium, indirect light — a few metres from a bright window, or behind a sheer curtain. Direct sun fades the patterns and burns the leaves. They tolerate low light better than bright sun.

Watering

Keep the soil lightly and evenly moist: water when the surface starts to feel dry, usually every 5 to 7 days in summer and every 7 to 10 days in winter. Calatheas react to hard tap water and fluoride with brown edges, so filtered, rain or left-out water helps.

Soil and repotting

Use a light, moisture-holding mix — potting soil with perlite and a little bark. Repot every year or two in spring.

Humidity and temperature

Humidity is what makes or breaks a calathea. Aim for 50% or more: group it with other plants, use a humidifier, or keep it in a bright bathroom. Keep it between 16 and 27 °C, away from drafts and radiators.

Common problems

• Crispy brown edges: dry air or hard water — the most common problem.
• Curling leaves: thirst or dry air; the leaves roll up to save water.
• Yellow lower leaves: overwatering or cold.
• Faded patterns: too much direct light.

Is a calathea safe for pets?

Yes. Calatheas are listed as non-toxic to cats and dogs.