Iris Lavender Oil Potpourri Spray (3.5 cm x 3.5 cm x 16.3 cm, Lavender) Iris home fragrance potpourri spray-lavender is a mixture of dried plant material that emanates a gentle fragrance. You can put some in a decorative bowl in your home or office. Potpourri has come to be appreciated as much for its visual appeal as for the alluring fragrance that gently spreads wherever it is kept.