Brown leaves/brown spots: sunburn, water stress or cold?
Brown leaves are often caused by water stress, sunburn, or cold/drafts. A quick check will help you identify the cause and take immediate action.
Brown leaves or brown spots: this is the cause (and how to fix it)
Does your houseplant have brown leaves or brown spots? This is one of the most common problems with houseplants. The cause is almost always due to too little water, too much water (root stress), or damage from sun or cold. With the quick check below, you'll discover what's wrong within 2 minutes — and how to fix it immediately.
Quick diagnosis (2 minutes)
- Feel 3–5 cm deep into the potting soil. Bone dry? → often dehydration. Wet/cold? → often too wet/root stress.
- How does the brown part feel? Crispy/dry = often sun/dryness. Soft/dark = often too wet/cold.
- Where is the damage located? On the window side = sun/cold window. Spread everywhere = often water stress.
- Has it changed recently? (moved, season, new plant) → location stress.
Cause 1: Too dry (thirst or dry for too long)
Identification: brown, crispy edges or entirely dry leaves. Potting soil is light and dry.
What to do:
- Give 1× a good watering and let it drain completely.
- Only water again when the top 2–3 cm is dry (no “small amounts”).
- Is the plant next to a heater? Move it slightly further away.
Cause 2: Too wet / root stress
Identification: brown spots can be dark and somewhat soft, often accompanied by yellow leaves. Potting soil stays wet for a long time or smells musty.
What to do:
- Stop watering and let everything drain well.
- Do not leave water in the decorative pot or saucer.
- Move it to a slightly brighter spot (no harsh afternoon sun) so the pot can dry faster.
- If there's a musty smell or it remains wet: consider root stress/root rot and potentially repotting.
Cause 3: Sunburn (harsh sun) or cold window (cold damage)
Sunburn identification: pale/brown spots on the window side, often after a sunny day. The leaf may feel papery.
Cold identification: damage after a cold night/draft or against a cold window. Dark brown spots, sometimes a bit "watery" at first.
What to do:
- Place the plant in bright, indirect light (no harsh afternoon sun).
- Move the plant away from a cold window/door or drafty spot.
- Damaged leaves will not recover; focus on preventing new damage.
What to do today (summary)
- Potting soil check: dry vs. wet determines your first action.
- Location check: sun, radiator, draft, cold window.
-
Stability: don't keep moving it, don't top up "just in case".
Common mistakes with brown leaves”
- Giving small amounts of water too often
- Constantly moving the plant
- Leaving water in the decorative pot
- Placing the plant in full sun without acclimatization
Frequently asked mini-questions
-
Should I cut off brown leaves?
Only cut off the brown, dead part for a neat look. Leave healthy green leaves for recovery. -
Will brown spots turn green again?
No. Recovery is indicated by new leaves that remain healthy. -
When is it "concerning"?
If brown spots spread quickly and the potting soil remains musty/wet: check for root stress/root rot.
Further reading: Light & location · Too much water vs too little water · Repotting & choosing pot size
Related
Read more
- → Back to Inspiration & knowledge (main hub)
- → Plant care (basic guides)
- → Styling plants indoors
- → Inspiration by room
- → Plant SOS: quick solutions
Want to prevent problems like brown leaves? Check out our easy houseplants that require little care.
0 comments