A seed knows how to wait. Most seeds wait for several years before starting to grow; a cherry seed can wait for a hundred years with no problem. What exactly each seed is waiting for is known only to that seed. Some unique trigger-combination of temperature-moisture-light and many other things is required to convince a seed to jump off the deep end and take its chance—to take its one and only chance to grow.

A seed is alive while it waits. Every acorn on the ground is just as alive as the three-hundred year-old oak tree that towers over it. Neither the seed nor the old oak is growing, they are both just waiting. Their waiting differs, however, in that the seed is waiting to flourish while the tree is only waiting to die. When you go into a forest you probably tend to look up at the plants that have grown so much taller than you ever could. You probably don’t look down, where just beneath your single footprint sits between one hundred and one thousand seeds, each one alive and waiting... When you are in the forest, for every tree that you see, there are no less than three million more trees waiting in the soil, fervently wishing to be.

When the embryo within a seed starts to grow, it basically just stretches out of its doubled-over waiting posture, elongating into official ownership of the form that it assumed years ago. The hard coat that surrounds a peach pit, a sesame or mustard seed, or a walnut’s shell mostly exists to prevent this expansion. In the laboratory, we simply scratch the hard coat and add a little water and it’s enough to make almost any seed grow. I must have cracked thousands of seeds over the years, and yet the next day’s green never fails to amaze me. Something so hard can be so easy if you just have a little help. In the right place, under the right conditions, you can finally stretch out into what you’re supposed to be.

Each beginning is the end of a waiting. We are each given exactly one chance to be. Each of us is both impossible and inevitable. Every replete tree was first a seed that waited.

This is an excerpt (pp. 30-31) from Lab Girl by Hope Jahren.