Shade Lily, Plantain Lily
Set plants 15 to 30 inches apart, depending on the ultimate size of the cultivar or species. (Set very dwarf kinds 9 to 12 inches apart.) Hostas are among the best of plants for shaded situations, but some also succeed in full sun, as they become larger and more mature. The hotter the summers, the more shade will be necessary to prevent scorching the foliage. A high shade canopy providing dappled light is ideal.
Those with blue foliage are outstanding in the shade, while the yellow/gold types will effectively light up dark areas, but prosper, too, in considerable sun. Individual cultivars of green-gold or variegated patterns vary appreciably in the amount of sun they can tolerate. While widely tolerant of soils, hostas do best in a well-drained soil that still affords ample moisture – the sunnier the location, the moister the soil should be. Incorporate generous amounts of humus in the soil, particularly those on the limy or alkaline side.
A winter mulch is extremely important the first winter, to prevent heaving of unestablished plants as a result of alternating freezes and thaws. Once established, hostas can be left undisturbed for many years, but as landscaping needs dictate, can be moved at almost any time during the year, except midsummer.