Popular: This palm tree variety (The Trachycarpus Fortunei) is the most frequently sold palm variety in Northern Europe because it grows perfect in most weather conditions. Plant sale: Get an Asian windmill garden palm tree. Easy maintenance: Keep outdoors or in a pot in a sunny location and in well-drained soil. Watering: Water on average three times a week during dry, hot summer, depending on how moist the soil is. Supplied as: A plant with a total height of 60-70cm, including a wide pot with a diameter of 21cm.