i want to start with a post by Cedars from another thread, as it involes a genus i'm currently dealing with and want to follow up on:
Just a week or two ago, as I roamed the meadows with my Crex companion, we were discussing the lupine and its dominance along the roadways and resurgence in a clear cut area (cut was winter 07-08). My friend lives near the meadows and wanted to get a few seeds to put on her property. She spent some time researching how to get these guys to grow from seed. Holy cow what a complex project.
Best practice: Buy some started plants.
otherwise place a closed screened object over the seed pods and wait for them to open (explode). Catch the seeds in your screened object (exploding pods disperse seeds). Keep seeds in dry spot for a couple of months. Store seeds in fridge for a couple of months. Remove seeds and carefully nic/rough up each seed or it wont sprout. Plant seeds. You can soak the seeds for a day or place them in wet paper towel until they swell, then plant.
Above advice comes with no warrantee. egads.
This kinda explains why we find the majority of lupine in the meadows along the roads or in recent cut areas. The seeds have been plowed, road rashed and generally abused.
You've been warned.
Roger all that. i collected quite a few wild lupine seeds when racoon & i climbed a nearby mountain a week or so ago, and initially i presumed it was arctic lupine because i thought that was the native lupine in my area, but now i'm not so sure. the plants were profuse and we simply seized the stalk below the pods and stripped them by the hand full. nonetheless, had we been perhaps a day earlier the pods may not have been ripe enough, or a day later and so dry that they opened & dropped the seed. ah sweet serendipity! chaos favors the prepared imagination.
i figure to grow the seeds to find out what species i collected, and i found like you that the seeds are considered "physically dormant" and require some manner of treatment to break the water-proof seed coat. i read about heating in a foil pack put in sand put in an oven, brief submersion in hot water, and knicking the seed-coat with a file. add to that, lupine is biennial from seed, and getting to a flower is at least a 2 year ordeal. worth it i say, if it's a native species and not some cultivar.
here's the only decent Lupine imagery i have, though i'm not so sure it is the arctic lupine i id'd it as. it is growing in my garden from a packet of mixed wildflower seed, which only said lupine.
that's a wrap. you know what to do.
YouTube - bumblebee on arctic lupine