overwintering Phyllostachys nigra in z6 HELP!!
I recieved a pot of small spindly balck bamboo from an ebay seller,it was spindly & only had shoots as thick as tiny twigs & the plant had fallen apart in ship...I was happy that it had green leaf growth tho & potted all of the broken pieces into 5 gal buckets to try & save them .so far they really havent grown much,even during summer ,one piece died but several still have green leafs & are living despite being outside unprotected in 23 deg nighttime temps!!I wanted to know the best way to overwinter as I think its much too late to try planting them out w heavy mulch tho I wamt to try this next spring when it has a full season to establish before winter.I have lots of warm fencing & get alot of z7 tropicals callas etc back ..I need advice from experienced growers in cold winter cliamtes as I have never had semi hardy bamboo before & want these babies to survive the winter..any info on care & feeding & tips on overwintering would be appreciated!!thanks!!