[10u152]

Yes....and no.

Lettuce likes some pretty specific conditions. If there's one area that's perfectly suited to growing lettuce with the minimum resources (fertiliser/water etc) then grow it there. Better than trying to grow it in the desert or somewhere much too cold.

If Australians go without lettuce for a month or so nobody is going to die. Eat rocket, spinach and cabbage instead.

[twicetwice]

For Americans (and others?) who are OOTL, rocket == arugula. It has a bunch of other names too, apparently.

[distances]

For continental Europeans: they mean rucola

[BoiledCabbage]

Interesting - arugula and rucola are very similar phonetically.