import cv2

def mark_trees(image, trees):
    """Draw bounding boxes for trees on the image."""
    if trees.size > 0:  # Only draw if trees are detected
        for tree in trees:
            x1, y1, x2, y2 = map(int, tree[:4])
            cv2.rectangle(image, (x1, y1), (x2, y2), (0, 255, 0), 2)  # Green box
            cv2.putText(image, "Tree", (x1, y1-10), cv2.FONT_HERSHEY_SIMPLEX, 0.9, (0, 255, 0), 2)
    return image