When I was growing up, I had an old neighbor named Dr. Gibbs. He was very nice, and never yelled at us for playing in his yard.
When Dr. Gibbs wasn’t saving lives, he was planting trees. His house sat on ten acres1, and his life’s goal was to make it a forest.
He never watered his new trees, which flew in the face of conventional wisdom. Once I asked why. He said that watering plants spoiled them, and that if you water them, each successive2 tree generation will grow weaker and weaker. So you have to make things rough for them and weed out the weenie trees early on.