Lavender is entwined with the very soul of Provence. In the summer, when the lavender fields bloom, a vibrant purple sea envelops the region's medieval monasteries, lapping at ancient hilltop towns and traditional working farms. In July, lavender is everywhere – snaking up hillsides in parallel purple rows, splashing field after field with a touch of day-glo purple. In August, it’s harvest time -- the rows still stand but their purple hues are more subdued after tractors pass through and collect...