Aaaaah; thank you all so much, Ladies!
We were given some seeds ages ago, and never knew then what they were, expecting them to be an annual for some reason!
There's hardly any soil under this one, just concrete rubble, a few bits of sand and little else! We'll move it next year though, as I keep bashing it with the mower, and the fucsias opposite start moaning at me as well, so I have to get away a.s.a.p....
Thanks again!