(DOD meaning: Dead on delivery)
I don’t know precisely if the DOD term was coined by the renowned Prof. Norman Deno but surely he reminded me of it while reading a delightful Bulletin of the American Rock Garden Society from 1991. DOD refers to the fact that seeds that require to be kept moist after collecting, when stored and/or delivered otherwise (by Seed companies or in Seed exchanges), are actually dead and there is little to expect of them in terms of germination. In his article named – Fatal Treatments of Seed he elaborates on how to kill seeds of 12 species by practicing wrong techniques of storing and/or germinating. For Trillium albidum, Fatal means: dry storage.
Same goes for many other Trillium species, and among them, Trillium grandiflorum. After collecting (see how the fruit looks when it’s ready), such seeds should be either sown right away or stored moist. When kept at room temperature, a few seeds will emerge radicles by fall. The others, like in other hypogeal germinators, will grow a radicle/baby rhizome or tuber in the coming season, and then send up the first leaf only after another cold cycle (that means in their second year).
These are a few Trillium grandiflorum seeds with emerged radicles that I found last week, during my routine check of the moist stored seeds. A few more pots were added to my collection and I am looking forward to see these little Trilliums sending up their first leaf next year! The other seeds are still in moist storage, awaiting…
Providing moist-packed seeds it is a lot of work but BotanyCa will not be responsible of any DOD’s! See all the Moist-packed Seeds from the Shop.
(If someone knows of other species that would benefit from moist storage please let me know – Contact)
And here’s the link for the ARGS Bulletin -1991 (open as a pdf). It contains great articles like: Saga of a Woodland Garden by Harold Epstein and Hepaticas and Anemonellas by Jeanie Vesall to mention just a few…