Gentiana makinoi ( Gentian )
An erect perennial that die back in winter . Flowers look in late summer . Google Plant Images : sink in here ! Characteristics Requirements Plant Care Fertilizing Light Watering Planting A week to 10 days before planting , add 2 to 4 inch of aged manure or compost and work into the planting site to improve fertility and increase water keeping and drain . If dirt writing is weak , a layer of topsoil should be deal as well ....