Ozycabbages

I met a traveller from an arid land
who said: Upon a strip of loam,
amidst the shale and dust, and sand,
a mighty cabbage once had grown!
Its heart was huge, its leaves were green,
an old man claimed, with wistful looks.
The biggest cabbage ever seen!
Its boiling busied all our cooks!
But now, for all the locals’ talk
no cabbage traces can be found.
Not even one small cabbage stalk
upon that vast and stony ground.