Oriental lilies can be grown as perennials in most regions. plant outdoors in the garden when flowering period is complete. wonderful in mixed borders or as a focal point in a large patio planter. the long-lasting blooms are excellent for adding fragrance and dramatic form to freshly-cut flower bouquets. for best results, give oriental lily bulbs least 1 inch of water every week. they don't like wet feet, keep the soil moist but not wet by adding a layer of 5" to 6" inches of mulch. to avoid water logging in containers, make sure planters drain well. oriental lilies are superior long lasting cut flowers, blooming for 7 to 14 days depending on the variety. look for flowers with buds and follow these simple tips to prolong the blooms: holding the lily stems under running water, cut about one inch off each stem with a sharp knife or shears.