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Slime Mold

Physarum spp. or similar myxomycetes

2 host plants

Last updated

Data Coverage 3 of 6 dimensions
Causal Agent
Host Plants
Symptoms
Management
GDD Threshold
Regional Notes

You'll see white-to-yellow gelatinous sheets emerging from soil surface on strawberry and other hosts, later forming yellow to purple-brown masses. Despite its alarming appearance, slime mold causes no plant damage since it feeds only on decaying organic matter. It's purely aesthetic. Simply mow, rake, or wash off the structures with a strong water stream. The problem disappears within 1-2 weeks on its own.

Good sanitation is your most effective tool against slime mold. Remove and dispose of infected plant material, clean up fallen debris, and sterilize your pruning tools between plants. Reduce leaf wetness by watering at soil level and spacing plants for adequate air movement. These practices reduce the pathogen load in your garden over successive seasons.

Quick Reference

Causal Agent
Physarum spp. or similar myxomycetes
Host Plants
2

Management

Cultural Controls

  • Mowing, raking, or washing will remove small slime molds.
  • Larger masses can be removed with a shovel or a strong stream of water.

Host Plants (2)