... and lastly
Tips for growing black locust from seed collected from desirable parent trees
I'm glad you posted about Black Locust, as I was slightly confused about growing it here in NY. I read that it was an evasive species, but I've seen it posted for sale. I'm guessing if it's properly maintained, the state is ok with it.
I believe the official status of Black Locust is discussed in other posts, but the way it was explained to me by a state official a few years back (subject to change) is that as a "restricted species" it can't be introduced in to "new areas". The interior Adirondack Park was given as an example. I struggle to think of any other corner of the state where locust hasn't already been well-naturalized for a century or more.
Yes I read the definition in your love story, and the "New area" is kinda what confused me. If it grows in my area, but not on my property, am I introducing it to a new area? I guess technically I could be, but it could be in the woods next door and I don't know it.
before I loose this, I want to add this advice shared by Carl Albers (retired Extension specialist and Black Locust admirer) on propagation from root cuttings (vs. seeds, which is covered in one of the documents above).
Propagation of BL is usually from root cuttings and yes we've done it and have been successful. Follow out root flares until you find roots that are circa 1/2-inch or so in diameter. We have dug these up using garden forks...sometimes the root sections used can be several feet long...dig when the trees are dormant. Place in a moist burlap bag during transit. We used a flat cut on the end of the root towards the tree and a slanted cut towards the end of the root...the distal end...farthest away from the trunk. Cut the root into 6-inch sections, flat cut up, slanted down in the pot/rooting bed. The flat cut should be flush with the soil surface...use a good draining potting soil mix. Collect some soil from BL groves with straight, healthy trees to provide your inoculum...Rhizobia for N-fixation and also the mycorrhizal fungi...add a bit to each pot. Don't over water as this can make problems with fungus gnats worse...if possible move outside as natural enemies will take care of any fungus gnat problems.