Thanks for replying. They've been in them for 2 years. Several new shoots in each pot. I have 2 negra which look fine and 2 each of green and gold., it's the green and gold ones that are going brown.
Hi Petawake, I have 2 8ft bamboo's in two very large tubs. Have you fed the bamboo is a grass and I feed mine with lawn fertiliser but no the one that is weed, feed and moss killer. You must make sure it's just lawn feed, they are also a very thirsty plant so in the summer if we don't have rain a bucket of water per day and if we do get rain I still give them water ever other day. If they get to big for the pot or are already to big you can split them. I'm using mine as a screen so my neighbours can't see into my lounge.
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They are in large pots partially sunk into the ground.
Sounds like I've got to lift them then?
They make big root systems, so there's a good chance there's not much soil left in the pots - just lots of roots.
I live in west central Scotland - not where that photo is...
They've been in them for 2 years. Several new shoots in each pot.
I have 2 negra which look fine and 2 each of green and gold., it's the green and gold ones that are going brown.