Chinese Evergreen Leaf Curl — Temperature, Water Stress, or Pests
Chinese Evergreen (Aglaonema commutatum (and related cultivars))
Symptoms
- the pointed leaf blades cupping or rolling inward toward the center vein
- curling most pronounced in newer, recently emerged leaves
- in cold cases, the curl is often accompanied by a slightly different texture or discoloration
- in underwatering cases, the petioles also go limp and the soil is dry
- in thrips cases, the curl is in new leaves specifically, often accompanied by silver streaking at the leaf base
Causes
Cold stress causing cellular contraction
Chinese Evergreen is among the most cold-sensitive common houseplants. When leaves are exposed to temperatures below 60°F, the cellular damage causes leaf tissue to contract and curl. This can appear as an inward rolling of the leaf blade and may be accompanied by slight darkening or discoloration at the affected margins. Cold-induced curl is often noticed suddenly — a plant placed near a cold window for a night, or a cold draft passing through a room — and may appear before the more obvious brown patch symptoms of cold damage develop.
Underwatering causing turgor loss and leaf curl
When Chinese Evergreen is significantly dehydrated, leaves curl inward as the cells lose the water pressure needed to maintain leaf structure. This is accompanied by petiole collapse and bone-dry soil. The curl from underwatering is usually uniform across the leaf and accompanied by other clear dehydration signs.
Thrips feeding on developing leaves
Because Chinese Evergreen produces new leaves from multiple low crowns rather than a single tall growing point, thrips damage often shows up on more than one stem at once if several crowns are infested simultaneously. Feeding occurs while the leaf is still furled at the base; once it opens, the tissue is already distorted — curled, silver-streaked, or edged irregularly — while older leaves elsewhere on the plant remain unaffected. Black thrips frass on the silver-damaged areas confirms the diagnosis.
How to Fix It
- 1
Is the curl on new/emerging leaves, with older leaves fine? Inspect the crown for thrips. Shake a suspect leaf over white paper — thrips will drop onto it. Treat with insecticidal soap or spinosad if confirmed.
- 2
Is the curl on multiple leaves with dry soil? Water immediately. The plant should uncurl within 6–12 hours.
- 3
Is the curl on leaves nearest a window or vent? That points to cold exposure — move the whole plant at least a few feet from the glass or the draft and keep the room above 60°F from then on. Curled leaves that are already damaged typically won't fully relax again, but leaves that emerge afterward, once every crown is out of the cold, should unfurl normally.
- 4
After resolving the cause: damaged leaves may not fully uncurl, but new growth emerging after the correction should be normal.
Prevention
- Keep the whole clump above 60°F — check every crown individually after a cold snap, since one stem can show curl while its neighbors look fine
- Check soil moisture every 7 days and water before severe dehydration occurs
- Inspect the growing crown monthly for thrips
Quick Summary
| Plant | Chinese Evergreen (Aglaonema commutatum (and related cultivars)) |
|---|---|
| Category | Environment |
| Likely causes | Cold stress causing cellular contraction, Underwatering causing turgor loss and leaf curl, Thrips feeding on developing leaves |
| Fix steps | 4 steps — see above |