Big old trees inspire our respect and even affection. The poet Walt Whitman celebrated a Louisiana live oak that was solitary "in a wide flat space, / Uttering joyous leaves all its life without a friend a lover near." Groves and alleys of live oaks remain as distinctive landscape features on Louisiana's antebellum plantations, while massive individuals still cast their shade over churches, graveyards, parks, and roads. Cajuns have adopted the...