'Silver King' Euonymus is a natural for use as a privacy hedge, and takes well to pruning or training as an espalier. Topping out at six feet and about three feet wide, this variety could be shaped into a topiary and grown in a large container planter. Please make sure 'Silver King' gets full sun, as its dense foliage could be prone to mildew in a shadier setting. Whether you choose to shape this euonymus or let it grow naturally, the silvery-edged foliage will make a striking year-round addition to the garden.