Melianthus major (honey bush) from South Africa is extremely large and not suitable for a small garden.  However, if you have space to plant this peanut scented beauty in a semi-shaded area you will please a lot of garden visitors.  Orioles love its plentiful nectar.  Melianthus major is drought tolerant, but might require monthly water in summer, depending on its geographical location.  Cut the stems off to the lowest bud after it fades in early summer.  The plant will grow again into an attractive hump until it's time to bloom in spring.  Then it will grow its enormous flower spikes.