New diagnosis
Plant photo

Diagnosis Complete

Septoria Leaf Spot

Analyzed April 29, 2026

Primary Diagnosis

Septoria Leaf Spot

moderate
Confidence72%

Diagnostic note

Lesion morphology shows characteristics consistent with fungal leaf spot, most likely Septoria based on the tan centers with defined darker borders. However, bacterial leaf spot cannot be ruled out without microscopic examination as both can produce similar angular lesions with chlorotic halos. The leaf shape suggests this may be a cucurbit, bean, or similar broad-leafed plant. Presence of multiple age-stages of lesions indicates ongoing secondary spread typical of Septoria.

What the AI detected

  • circular to angular brown lesions with darker margins
  • tan to gray centers in mature lesions
  • lesions distributed across mature leaves
  • chlorotic halos surrounding some spots
  • multiple lesions per leaf indicating established infection

Alternative possibilities

#1Septoria Leaf Spot
72%
#2Bacterial Leaf Spot
18%
#3Anthracnose
10%

Treatment plan

  1. 1Remove and destroy heavily infected leaves
  2. 2Avoid overhead watering to reduce leaf wetness
  3. 3Apply copper-based fungicide at first sign of symptoms
  4. 4Improve air circulation by proper spacing

Treatment guidance informed by published plant pathology research.

Treatment informed by peer-reviewed plant pathology research · Explore studies at consensus.app