Using Bifenthrin (Bug Gun) on Plum Trees Off-Label

Situation

Plum tree sprayed with bifenthrin (Bug Gun) for caterpillars—plum not on label.

Assessment

• No harm likely. Labels list tested crops, not all possible uses.
• Bifenthrin controls caterpillars on many plants.
• Check for leaf burn in days after spray. If none, tree is fine.
• Other bifenthrin labels do list plum.

Key Takeaway

Off-label use of bifenthrin on plum for caterpillars is low-risk if no phytotoxicity appears. Always verify plant tolerance when possible.