Which of the following best describes when to apply herbicides?

Applying herbicides when weeds are actively growing is the most effective time for treatment. During this phase, weeds are more susceptible to herbicides because they are taking in nutrients and actively transporting them within their system. This is when herbicides can be absorbed efficiently, allowing them to effectively control or eliminate the weeds.

Targeting weeds at this growth stage increases the likelihood of success, as the chemicals in the herbicide can disrupt their growth processes most effectively. This method maximizes the herbicide's effectiveness and helps in preventing the weeds from establishing further or competing with desired plants.

In contrast, applying herbicides at the end of the gardening season or only during winter months may not yield the same results because weeds may be dormant or significantly reduced in their growth activity. Similarly, applying herbicides before planting new flowers can be risky since it might also affect the establishment and growth of the newly planted flowers if they are sensitive to those chemicals. Therefore, timing your application when weeds are thriving is crucial for optimal control.