Corn plant: yellow leaves
Why are the leaves turning yellow?
On corn plant, the likeliest cause is soil kept too wet. Push a finger two inches in.
- 1Soil kept too wet
Ranked here because a 10–18 day interval leaves plenty of room to overdo it.
How to tell. Push a finger two inches in. If it is damp and the yellow leaves are soft or limp rather than crisp, the roots are the problem. Tip the plant out — healthy roots are pale and firm, drowning roots are brown and smell sour.
What to do. Stop watering until the top two inches are properly dry. If the roots already smell, cut the mush off, repot into fresh gritty mix, and use a pot with a drainage hole.
- 2Left dry too long
Ranked here because possible, but this species tolerates a missed watering fairly well.
How to tell. Soil pulling away from the side of the pot, and the pot feeling light for its size. Yellowing starts at the oldest leaves and the edges go papery before the whole leaf turns.
What to do. Water thoroughly until it runs from the drainage hole, then return to the stated interval rather than a splash every few days.
- 3Exhausted potting mix
How to tell. Overall pallor rather than distinct yellow leaves, on a plant that has been in the same pot for years.
What to do. Repot into fresh mix. Feeding a rootbound plant in tired soil is treating the symptom.
- 4Not enough light
How to tell. Yellowing concentrated on the side facing away from the window, with new growth smaller and paler than old growth.
What to do. Move it closer to the glass. Not a different room — a different distance from the same window usually does it.
- 5Ordinary ageing
How to tell. One or two of the oldest, lowest leaves yellow evenly while everything above stays green and new growth continues.
What to do. Nothing. Remove the leaf if it bothers you.
Why that order, for this plant
The ranking above is not a generic list. It is computed from this species' own record — a watering interval of 10–18 days, a tropical understory origin, a humidity floor of 30%, and a light range from low to bright-indirect. Change those figures and the order changes with them.
That is the whole point of a per-species page. Yellow leaves on a plant watered every three days and yellow leaves on one watered every three weeks almost never have the same cause, and a list that ranks them identically is worth nothing to either owner. You can check the reasoning against the care fields on the species entry, which is where these numbers come from.
No percentages appear on this page. We have not run a grower survey, and a confident-sounding figure with no dataset behind it is worse than none. Order and distinguishing tests are what we can honestly give.
Other problems recorded for this species
- Brown crispy edges monitor
- Drooping act today
Also for this species
Full care entry with light, watering and soil. How to propagate it. Toxicity to cats and to dogs.
Sources
- Missouri Botanical Garden Plant Finder — Dracaena fragrans Pest and disease record. Checked 2026-09-11.
- Royal Botanic Gardens Kew, Plants of the World Online — Dracaena fragrans Accepted name and family. Checked 2026-09-11.
- ASPCA Animal Poison Control — Dracaena fragrans Relevant if a damaged plant is being chewed rather than merely ailing.
- This database's own care record for Dracaena fragrans — the watering, humidity and light figures the ranking is derived from.
Compiled and edited by Tony Valcarcel · 2026-09-12
Cause ordering is derived from this species' recorded care requirements, and the
derivation is stated above so you can disagree with it. It is not a diagnosis, and
a plant can have two problems at once. How this is sourced.