He started destroying Mrs Dubose's camellias without thinking of the consequences

Jem

Impulsive

“We had just come to her gate when Jem snatched my baton and ran flailing wildly up the steps into Mrs. Dubose’s front yard..."

“He did not begin to calm down until he had cut the tops off every camellia bush Mrs. Dubose owned, until the ground was littered with green buds and leaves.”

Excerpt from Chapter 10, Page 112