Euonymus japonicus, or the Japanese spindle, is a small flowering shrub native to Japan and China that is a popular ornamental plant among gardeners. This shrub has leathery, green foliage, with serrated oval leaves about two inches long. There are a few varieties of E. japonicus, which differ in the patterns on the foliage; for instance, ‘Latifolius Albomarginatus’ has a white outline around its leaves, and ‘Microphylllus’ has deep green leaves and grows much smaller than the other variants. Room temperature is fine; they should receive about average warmth. Keep them in cool, temperate conditions during winter. During the growth period from spring to fall they should be watered regularly. You can scale back their water during the winter.