Aloha Joe, I would suggest a very heavy layer of mulch over, on and all around the clump in the fall, it should be relatively dry mulch, leaves, straw, wood chips up to 2' tall.
We did this in Michigan where it gets -10F and we had many pants we could save thru winter in this way.
I do mean a large warming pile of green/brown waste all around to act as a blanket.
It would be a good experiment
I used to block the prevailing winter winds with full bales of straw 2 high staked into the ground to limit the wind chill effect and drying effect as well...
Just offering ideas.
I am sure they will respond to this added warmth.
Bobby
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Sent from my iPhone
On Apr 25, 2015, at 12:04 PM, Joe Smith know_ware@yahoo.com [bamboo-plantations] <bamboo-plantations@yahoogroups.com> wrote:
I have 9 unspecified textilis clumpers in my yard. All of the shoot in the fall, and freeze before the canes can mature properly, so I am quite disappointed in them. 3 of them are quite a bit hardier than the others and the frozen new canes will fully leaf out in the spring. 4 of them, about 50% of the canes leaf out in the spring... So, I end up with big bamboo bushes instead of the bamboo forest I desired.I have 1 japanese timber bamboo that I started from a 6 inch root cutting, 3 years ago. It is from Missouri, so perhaps it will fair better when it gets big.I have 2 alphonse karrs that do fine. One has particularly red/purple new canes in the fall.
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