I’ve come to live with them here as they are too rampant to try and fight. None of my plants are ugly from them but most have them, a few seem less inclined.

I do not miss winter bamboo damage and the subsequent cleanup...

Right, they must be disconnected from anything with foliage/leaves or they’ll just keep going.

They will keep coming up for a few years but regular mowing keeps them under control. Ideally you try to exhaust the rhizomes by letting new shoots get several inches tall between mowings. This is maybe not ideal for a lawn but your situation does not look’lawny’ so if it were me I’d just keep mowin...

Just mow it.

You can cut it down now but I would wait until a new crop of culms are up, leafed out, and when you press a thumbnail against the culm it does not leave a mark. Might take until September! Just my way of going about it, in my experience if you cut them too soon the new culms can tend to be floppy an...

Sounds right to me! On the cuttings it is recommended to shorten the branches down to a few viable buds and some people swear by filling the cut culms with water and keeping them full - never tried that yet, my last one were solid so I couldn't but why not?

Probably best before shooting, worst right after.

I've never paid attention to the time of year to do it, I suspect that there is a proper one, I did just see an old demo that said right before shooting is the only time they do it, but I'd do it if I were you and see what happens. The video I saw was produced by Bamboo Sourcery in CA and I suspect ...

Yeah, Oldhamii will work from culm cuttings. The cuttings take a year or more to really be ready to plant so often nurseries don't like the wait and do divisions instead as they are a bit faster.

Here is a pic where you can see new branches firing but my gut says that this particular bamboo will not work this way but I'll try anyway.

Hormone would not likely help. Bare root and culm cuttings need a good start and heavy soil is not a good start. I recently thinned some culms and chopped them into sections, then I placed them on a couple inches of mulch and then covered them with several inches more. They are in about 8-10" o...

Andy, in my experience it is tough to get browning bamboo to recover unless it ends up producing survival shoots. I think I would go ahead and pot the brown ones to see what happens. In general, I think bare root bamboo is not ready to go inground and for sure not in clayey soil. Next time maybe sor...

It looks so different! At least it exposed them to more sun in winter so they can acclimate more gently.

Looks like B fargesii sort of but is it fuzzy? I think you are right that Phy is out, S tootsik is cold tolerant to the maybe -5c range? Could be a large form of Pleioblastus, a Semiarundinaria, a Pseudosasa form or a Bashania?