If the statute does not involve a suspect or quasi-suspect classification, then rational basis review applies, in which a court must ask whether the statute is rationally-related to a legitimate governmental interest.
Autumn Foliage Color. The Process of Leaf Color Change. Leaves change color during the autumn because the amounts of pigments change as the leaves prepare to fall from the trees. All leaves gradually lose chlorophyll during the growing season, and this loss accelerates before leaf fall.
The slightest changes in weather in September - too warm, too cold, too wet, too dry - can slow color change or cause trees to drop leaves before they change color. Because it is too dry to produce the vibrant reds, yellows, and oranges, a severe summer drought will create a landscape filled with the subtler colors of tans, bronzes and auburns.