Successful weed removal was defined as the weed exhibiting both stages—smoking and perishing—within a 60-second timeframe. This temporal constraint enhances the speed, safety, and energy efficiency of the autonomous weed removal robot. The laser exposure duration required for effective weed removal was found to depend on both the weed species and its size. To determine optimal exposure times, field experiments were conducted in Arusha, Tanzania, and Vancouver, Canada, during sunny summer conditions, as both locations have comparable average relative humidity levels (approximately 70%).