Iris domestica. Blackberry Lily is a herbaceous perennial producing striking orange flowers covered with red dots atop a sword-like foliage. The foliage of this member of the iris family is displayed in a fan shape, adding an extra dimension of interest to the garden.
Blooms start in July and continue until September. After flowering, the 2-3' plants will set seed pods that open to display black seed clusters reminiscent of blackberries, hence the common name. The seeds are not edible.
Sow seeds inside 10-14 weeks before planting outside in a sunny location, after the last frost date has passed. To encourage germination, place the seeds in a plastic bag with moist, not wet, growing medium and place in the refrigerator for 1 week. After 1 week, remove the seeds and plant into seed trays covering the seeds with 1/4" planting mix. The seeds germinate best at 70 degrees; allow 3-8 weeks for germination. Once plants are established in the garden, divide the rhizomes every 3-4 years in the Spring.
USDA Zones 5-10.
Heirloom seeds are collected, cleaned and packaged by hand at Mount Vernon.