Formosa Crafts Pothos Silk Garland How to Collect Dahlia Seeds Save Some Beauty for Next Year! Collecting dahlia seeds has ups and downs. I am collecting seeds from fully double dahlias so sometimes the seed pods rot before the seeds have time to mature. Sometimes a worm eats Pineapple Sage (Salvia elegans) in Milwaukee Brookfield Waukesha New Berlin Pewaukee Wisconsin WI at Minor's Garden Center The Dark Allure of the Black Dahlia Flower