Why your calathea leaves are turning yellow
Good news first — yellow leaves on a calathea are almost always fixable, and you caught it. The usual culprit is water quality, low humidity, or inconsistent moisture. Let's walk through what your plant's telling you and how to set it right.
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Why are my calathea leaves turning yellow?
Most often it's water quality, low humidity, or inconsistent moisture. Plants yellow from the bottom up when they're stressed — usually water, light, or nutrients. Check the soil first: if it's soggy, you've been too generous with the watering can.
Calatheas yellow and crisp from tap-water minerals, dry air, or soil that swings between bone dry and soggy. Switch to filtered water, keep the soil evenly moist, and raise the humidity. Trim fully yellow leaves; they won't recover.
Should I cut the yellow leaves off my calathea?
Yes — once a leaf is fully yellow it's not coming back, and it's draining energy your plant could spend on new growth. Snip it clean at the base with sharp scissors. A leaf that's only partly yellow can hang on a while longer while you fix the underlying issue.
How do I fix yellow leaves on my calathea?
Start with the soil. Let the top inch or two dry before watering again, and make sure your pot actually drains. Then check light — a calathea sitting too dark will slowly yellow. Fix one thing at a time so you know what worked.
Why are my calathea leaves turning yellow with brown crispy edges?
That's the classic calathea complaint — minerals in tap water plus low humidity. The yellow is stress, the brown edges are mineral burn and dry air. Switch to filtered water, keep humidity high, and trim the damaged edges. New leaves will come in clean.
Why are my calathea leaves curling?
Curling leaves mean the plant's thirsty or the air is too dry. Check the soil — if it's dry, water thoroughly. If the soil's moist, the humidity's too low; add a humidifier or pebble tray.
Not sure? Ask Thumbs about your Calathea leaves turning yellow →
Thumbs talks you through it, one question at a time. Free during early access.