What weather conditions are favorable for the development of brown patch?

The development of brown patch, a common lawn disease caused by the fungus Rhizoctonia solani, is particularly favored by warm temperatures and high humidity. Specifically, the disease often occurs when temperatures are in the range of 65 to 80 degrees Fahrenheit, and it thrives when there is excessive moisture, such as from prolonged periods of rain or heavy dew.

In contrast, conditions like cold and dry weather do not favor the disease, as the lack of moisture and lower temperatures reduce fungal activity. Hot and windy conditions may also be detrimental, as the wind can dry out the lawn and inhibit the humidity levels that the fungus requires for development. Lastly, wet and freezing conditions are not favorable either, as the freezing will halt the growth of the fungus altogether.

Thus, the correct response highlights the temperature range combined with adequate moisture that supports the proliferation of brown patch, making it a significant concern for lawn care in favorable climates.