John, Global warming- need stacks more to grow this to full size here

, I think were 8b rather than 6. Not bad considering were at lat 52, sort of mid Canada for you guys

we normally drop to around -6/-8 c in the average winter, and that'll be in dead calm, we never get sub zero winds that the 'boos really seem to hate.
These sub-tropicals don't seem to mind winter much, it's the darn summer thats kills them- the lack of any real summer heat and cool nights really sets them back. By the time they do wake up and start shooting the first of the frosts are just weeks away, we've a very short growing season, frosts up to mid may and then around mid Sept
I'd guess mine here will follow the same pattern, just planted out from an oak tub planter, probably 30inches round and 8 foot tall or so. It'll settle in and come late summer will send up some nice sized shoots, these will get frosted off without doubt. Come spring it'll send out some super small stuff to sort of make up for the loss and again the late summer ones will be frosted. The plant will just get smaller over the years, once it's shrunk back to a reasonable size I'll dig it up and start again.
Only two of the semi-tropicals I've tried winter well and are looking good both sino-bambusa rubroligula and sishuensis are pretty good here. The plant labeled sino-bambusa intermedia is also hardy( here ) but isn't a sino-bambusa...
Bamboo...Please note... This plant is seriously addictive and you may lose interest in other, less rewarding plants!