The Pistachio Nut Tree Gardening in Spain Pistachio nuts  Pistachios are one of the oldest flowering nut trees. Flourishing in hot climates, pistachios spread from the Middle East to the Spanish Mediterranean. Selection of Spanish Gardening guides for you. History of the pistachio Pistachios are one of the oldest flowering nut trees. Recent archeological evidence suggests that the … Continue reading Pistachio Nuts Tree Flourishing in hot climates VERY Popular as a snack