Check these first
- Touch the soil to see if it feels soggy or swampy.
- Lift the plant to check if the pot feels heavy with water.
- Inspect the roots for a brown, mushy appearance or a foul smell.
Likely causes
Overwatering
Most likelyHow to tell: The soil stays wet for more than 10 days and the stems feel soft or mushy near the base.
What to do: Stop watering immediately and let the top 5 centimeters of soil dry out. If the soil is waterlogged, repot the plant into fresh, well draining potting mix and trim away any black, slimy roots.
Poor Drainage
PossibleHow to tell: Water pools at the bottom of the pot or the pot lacks drainage holes entirely.
What to do: Ensure your pot has holes at the bottom for excess water to escape. Use a saucer to catch water, but empty it within 30 minutes so the plant does not sit in a puddle.
Find out what's wrong with your neon philodendron
The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
When to worry
If the stems are turning black or mushy at the base, the rot is advanced and you may need to take stem cuttings to save the plant.
Stopping it coming back
Only water when the top 3 centimeters of soil feel dry and always use a pot with drainage holes.
Neon Philodendron: root rot? Check yours with a photo
Every plant is a little different. Take a photo of your neon philodendron and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.
Scan with your phone's camera to get the app
Or go to pocketbotanist.app/get on your phone
Get the app · Or check it from a photo now, free
Questions people ask
- Can I save a plant with root rot?
- Yes, if you catch it early. Trim the dead roots, repot in fresh soil, and adjust your watering schedule.
- How often should I water?
- Aim for every 7 to 10 days, but always check the soil moisture first rather than following a strict calendar.
More problems with Neon Philodendron
- What are these tiny webs on my Neon Philodendron?
- Why are my Neon Philodendron leaves turning yellow?
- Why is my Neon Philodendron getting so leggy?
- Why are the tips of my Neon Philodendron turning brown?
- Why is my Neon Philodendron drooping?
- Why is my Neon Philodendron dropping leaves?
- Why are my Neon Philodendron leaves curling?
Back to the Neon Philodendron guide
This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.

