lower leaf yellowing black spots on Monstera Deliciosa
Quick answer
If your Monstera Deliciosa has lower leaf yellowing black spots, the most likely cause is: Yellowing lower leaves on Monstera deliciosa with scattered black spots indicates secondary infection following physical damage, cold stress, or pest attack. The black spots are opportunistic fungi (Alternaria, Colletotrichum) colonizing weakened tissue. Yellowing spreads from wound sites as the plant redirects nutrients away from compromised leaves.
Start here:
- 1. Remove affected leaves at base to prevent spore spread
- 2. Spray remaining foliage with copper-based fungicide or neem oil
Why Monstera Deliciosa gets lower leaf yellowing black spots
Monstera deliciosa
Yellowing lower leaves on Monstera deliciosa with scattered black spots indicates secondary infection following physical damage, cold stress, or pest attack. The black spots are opportunistic fungi (Alternaria, Colletotrichum) colonizing weakened tissue. Yellowing spreads from wound sites as the plant redirects nutrients away from compromised leaves.
How to reverse lower leaf yellowing black spots on Monstera Deliciosa
- 1
Remove affected leaves at base to prevent spore spread
- 2
Spray remaining foliage with copper-based fungicide or neem oil
- 3
Address underlying cause: check for pests, physical damage, or temperature stress
- 4
Improve air circulation around plant to reduce fungal humidity requirements
- 5
Avoid wetting leaves when watering to prevent further fungal colonization
- 6
Monitor for 3-4 weeks; if spots appear on new leaves, systemic fungicide may be needed
Keep lower leaf yellowing black spots off this Monstera Deliciosa
Avoid mechanical damage during repotting or moving. Maintain temperatures above 60°F. Inspect weekly for pest damage that creates entry points for fungi.
Other Monstera Deliciosa problems
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