Rocket
 

Can tortoises eat rocket leaves.

Yes they can. I have fed it very occasionally and some of my tortoises won't eat it but others do.

It's quite high in oxylactic acid I believe, so an occasional feed.

I have it growing in their enclosure and they never bother with it but they have eaten it from a supermarket in the past

didn't know that mine demolish it....I thought rocket was posh dandelion leaves? but then I suppose that's not feed regularly either. My old Nan would wonder why I'm eating dandelion leaves on my salad if she were here. They grow like a rocket too, CB