Yes of course. They also appreciate you putting freshly cut grass on them now to speed up new growth with heat and feed.

The balance of tomato food is weighted towards the production of flowers and fruit though.

The majority of tomato feeds that we use here in the States approach 3-1-2 proportions--i.e., analyses like 24-8-16--and are perfectly good for bamboos. I understand that many sold in the UK are high in phosphate, which may cause chlorosis and tip-burn in some kinds of bamboo.

Thats right Tug, I wouldn't use ours for bamboo.....
just a balanced fertiliser, equal NPK

I wouldn't use tomato feed for the same reason that Tubrethil gives in the second part of the response. I would use bonemeal if I wanted to feed them.

My 5metre tall Bamboo says otherwise :)

21-5-6 is about the right NPK ratio for most bamboos, and tomato food here in the UK, as Tugbrethil says, has a much higher ratio of phosphate, so I wouldn't recommend it for bamboo. The last thing you want is to encourage flowering earlier than it might otherwise occur - bamboo usually turns its toes up and dies once its flowered. Luckily, under normal conditions, this a very rare event... Bamboo is a grass, and nitrogen is the biggest requirement - you could even use a lawn feed, provided it hasn't got any mosskiller or weedkiller in the formulation.

Good grief! Why would you feed bamboo? My daughter has inherited a garden that's infested with it and it's coming up everywhere! She spends hours trying to dig it out of her patch of lawn and the borders.

Just read through the reponses to this query and realised that my own is a load of rubbish! Of course I wouldn't use bonemeal, high phosphate, on a grass. It requires high nitrogen.