Plant Pathology Pal Home Stem Symptoms
1. Scroll down to browse images of possible stem symptoms.
2. Select the photo that best matches your issue then follow the instructions for next steps.


Stem spots with noticeable rings

Possible Diseases
Early Blight

Ring Spots


Lesions appear as small water soaked spots

Possible Diseases
Late Blight

Lesion Spots


Small round spots

Possible Diseases
Septoria Leaf Spot

Small Spots


Brown circle spots

Possible Diseases
Bacterial Spot

Small Spots


Yellowish Streaks

Possible Diseases
Bacterial Canker

Yellow Streaks


Large brown/dark brown rot

Possible Diseases
Southern Blight

Large brown/dark brown rot


Dark brown discoloration

Possible Diseases
Phytophthora Root Rot

Dark brown discoloration


Dark streaks

Possible Diseases
Pith Necrosis

Dark streaks


Sunken dark areas

Possible Diseases
Fusarium Root Rot

Sunken dark areas


Brownish discoloring

Possible Diseases
Verticillium Wilt

Brownish discoloring


Soft and watery white cotton like growth

Possible Diseases
White Mold

Soft and watery white cotton like growth
Select a photo above to search based on one of the listed types of damage your plant may have,
Fruit Symptoms Root Symptoms