
Root Rot Signs and What to Do
Root rot is most likely when yellowing, drooping, wet soil, sour smell, and mushy roots show up together.
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Root rot is more likely when decline comes with wet soil, sour smell, mushy roots, soft stems, or a sealed pot. It is worth checking carefully before repotting.
For christmas cactus, adjust the diagnosis around this plant profile: Holiday cacti are not desert cacti. Limp segments, bud drop, or root rot often come from watering swings, low light, temperature shifts, or dense soil.
Smell the soil and look for sour or swampy odor.
Slide the root ball out only if decline is severe or the pot has no drainage.
Check for brown, mushy roots versus firm pale roots.
Feel whether segments are limp from drought or soft from wet roots.
Check for sudden temperature or light changes during bud set.
Isolate the plant if rot is severe or pests are also present.
Trim dead roots and repot into a faster-draining mix if roots are mushy.
Do not fertilize while roots are recovering.
Recommended reading

Root rot is most likely when yellowing, drooping, wet soil, sour smell, and mushy roots show up together.
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A watering schedule is less reliable than soil depth, pot weight, light, plant type, pot size, and season.
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An overwatered plant often looks thirsty. Wet soil, yellow lower leaves, drooping, fungus gnats, and soft stems are stronger clues than one symptom alone.
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Monstera yellow leaves often trace back to wet soil, low light, watering swings, root stress, or pests hiding on new growth.
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Before you throw the plant away, separate water stress, root rot, pests, light problems, temperature stress, and normal leaf loss.
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Yellow leaves after watering usually mean the timing, drainage, soil mix, light, or root health needs a closer look.
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