Poetry professor turned prairie advocate and author Benjamin Vogt pinpoints a moment in his Minnesota childhood that influenced his current passions. As a boy, exploring a wood near his home in the yet-to-be-developed western suburbs, he was reveling in the quiet when a flock of geese flew overhead. “The sound of the wingbeats, the calls, woke something primal in me,” he said. Vogt gained a reputation — and following — for his philosophy on ethical gardening and innovative ways to approach home landscaping. Now he’s getting ready to release a book, “Prairie Up! An Introduction to Natural Garden Design,” on Jan. 24, outlining practical steps and detailed plans for creating…