Lettuce · Symptom guide
Bugs on lettuce plants
Bugs on lettuce plants in a garden bed are a look-and-compare job. Cited sheets list aphids as observations, not a ranked or confirmed cause. This page does not diagnose, name a spray, or sell a treatment.
Cited observations are comparisons—not a confirmed diagnosis. Check the cited sources and local requirements before taking action.
Save this bed. See it coming next year.
Your checks stay in the Field Book so next season is not a guess.
Illustrative photograph — not identification proof.
Look
Compare the plant in front of you with the cited notes after Other causes. Leaf marks alone do not name a cause on this page.
Other causes
Growing notes live on how to grow lettuce. Garden-wide looks live on garden pests. Tomato hornworm is a separate species page — not this crop-pest list.
What the sources say — at a glance
One source per card. Facts are not averaged.
Clemson HGIC 1312 (South Carolina)
Aphids named on lettuce.
Details and limits (2)
Look
Clemson HGIC 1312 (South Carolina) names aphids on lettuce. Naming on that sheet — not a ranking and not a diagnosis.
Limit
South Carolina HGIC 1312. Naming-on-sheet only.
UMN Extension (Minnesota)
Pear-shaped. Cornicles. Hose spray.
Details and limits (4)
Look
UMN Extension (Minnesota): 1/16- to 1/8-inch-long, pear-shaped, soft-bodied insects. Observation — not a diagnosis.
Look
UMN Extension (Minnesota): check for two tail pipes (cornicles). Observation — not a diagnosis.
Method
UMN Extension (Minnesota): knock aphids off plants with a strong spray of water from a garden hose. Method — not a prevention promise.
Limit
Minnesota aphids sheet. Observation and method as named.
Sources differ
Make it yours
Save the bed in the Field Book so next season is not a guess.
How we know — methodology. Ranges and assertions are cited per source, not blended.