How Do Plants Survive at Night?

Posted in: Science and Nature,Spirituality by bill-o on August 22, 2008

I believe that simple questions about science and nature can be points of reflection for us. These points of reflection can then lead to deeper questions about life and its meaning. In this way, the familiar leads to the unfamiliar; the natural to the spiritual.

A simple question about the natural world had puzzled me until recently: How do plants survive at night? Most of us know about photosynthesis: the amazing process by which green plants and trees use sunlight energy to survive and grow. Yet, for those of us who forgot the section about plants in biology class, plants also undertake the act of respiration, just as we do. With respiration (“breathing”), plants take in oxygen and release carbon dioxide. Because plants “breathe”, they can survive at night and in the winter (for those trees that shed their leaves each autumn).

Yet, there is still a little more to this story. Through photosynthesis, plants manufacture sugar. Many of these sugars become the main building blocks of the plant. They give the plant its overall structure and form. What is most interesting for us here is that plants make enough sugar from sunlight to tide themselves over during the nighttime and during dark, cloudy days. The sugar can be stored away as a starch and then converted back to sugar, as is necessary. Ultimately, the energy that is stored in the sugar is needed for respiration.

I would propose to you here that this natural process can serve as an example for our spiritual lives. We are like the plants and the light is like God’s touch upon our lives. Specifically, light may represent wisdom, insight, guidance, and revelation. This light represents the “Springtime seasons” of our lives, our “good days”. The nighttime and winter represent our difficult “desert” or “wilderness” spiritual experiences. At its most difficult, this can even be the “dark night of the soul” that Saint John of the Cross speaks about.

I think that many followers of Christ and spiritual seekers in general see the difficult times of life (trials) as completely distinct phases that are separate from the rest of one’s life. Yet this is not so. Just as the plants manufacture the sugar that they need during the day so that they can then breathe at night, so God gives us what we need during the good times so that we will have what we need during the trials of life. In this way, there is a delayed effect. His touch on our lives should not be completely and immediately consumed. Rather, some of what he does in our hearts and lives should be stored up for later use, … when the sun sets or the snow falls in our lives.

After Jesus fed five thousand people with bread, he told his followers (disciples) to gather up all of the leftover fragments lying around on the ground. In this way, no bread would be lost. The disciples first experienced the miracle and immediately distributed its result, but then Jesus told them to do the very messy job of picking up whatever remained. For the disciples, what came first was blessed loaves of bread, touched by the hands of God’s son. What came next were partially eaten fragments touched by the dirty ground. In Christ, nothing is ever wasted. Some of God’s bread is for right now. Some of his bread is for later. All is his, … given to us. For the day and for the night.