Row after row of plants lay flat, their brown branches and bone-dry roots splayed out on ochre grass. Aerial images of the scene are a little disorienting: There are so many toppled shapes that it’s hard to make sense of the scale. At first glance, a viewer might assume they’re surveying uprooted weeds or unwanted shrubs—small, brambly ankle-scratchers baking in the afternoon sun and not particularly mourned. But the plants weren’t weeds: They were once almond trees, each roughly as tall as a two-story home, economically precious, and very much…