>> Sunday, November 8, 2009
As much as I would like to fantasize about red leaves and gourd harvests being year round, there is actually a good reason for why it can't last. All those beautiful colors are caused for a very good reason. In the fall, the days get much shorter and the plants have less time to photosynthesize. This is how our plants make food for themselves and what gives them the beautiful green we are used to. The chlorophyll in the plant is what helps this photosynthesis happen. As the plants chlorophyll gets smaller, other pigments in the plants begin to show through, like the reds and yellows you see around you this time of year.
The plants are conserving energy to survive the oncoming winter and then lose their leaves. When the days get longer, the leaves come back, and are green for feeding! This is pretty impressive and makes me appreciate fall all the more.