Monty: diagnosis
Sep 21, 2026 16:04 AI + rules medium urgency
Symptoms: Yellow lower leaves, Musty smell or moldy soil
Foliage colors: 0.76 green / 0.21 yellow / 0.04 brown (share of 1.0)
Identified as: Monstera deliciosa
Likely causes
Lower leaves are uniformly yellow and soft, and the log shows five waterings in ten days.
To confirm: Push a finger 5 cm into the soil: if it is still wet after several days, water is not being used.
Musty soil smell was reported, which often follows persistently wet soil.
To confirm: Slide the plant out of the pot: healthy roots are firm and pale, rotten roots are brown and mushy.
A single yellow leaf at the bottom can simply be old.
To confirm: Check whether only the oldest leaf is affected and new growth is healthy.
Last fed 40 days ago, so unlikely on its own.
To confirm: Look for pale new leaves rather than old ones.
Treatment plan
- Stop watering until the top 5 cm of soil is dry.
- Check the pot drains freely and empty the saucer.
- If the soil smells musty after drying, unpot and trim any mushy roots.