Every spring, gardeners go out to plant. We prepare the soil and carefully bury a tiny seed. We might water, if the soil is dry. Mostly, we watch and wait. We fully expect that seed to germinate and grow to maturity. But what is actually happening beneath the warming soil? What is a seed, anyway? How does it know when to break dormancy and germinate? How does it know which way to grow? Since spring is approaching, I thought I’d write a series of posts on seeds—where they come from, what they are, what happens to make them grow. (more…)