I came across the blackberry lily in my Grosse Ile garden - only one. I am interested in propagating. They are lovely and will add to the beauty of the garden.
Yes, the seeds drop and produce new blackberry lily plants. The clump also increases through the rhizomes.
They are actually not lilies, but in the iris family.
https://www.gardeningknowhow.com/ornamental/bulbs/blackberry-lily/growing-blackberry-lilies.htm
http://www.gardening.cornell.edu/homegardening/scenebb97.html
This plant is new to me so no further questions at this time. Thanks
They are not deadly, and only mildly toxic. They are not edible, though.
Here is an article that will help you to care for them:
https://www.gardeningknowhow.com/ornamental/bulbs/blackberry-lily/growing-blackberry-lilies.htm