My favourite example of guerrilla gardening in Milan is along the tram lines just outside the centre of town. In Milan the trams mostly run along the roads -or rather don't, because the Milanese habit of double parking on bends usually means that at a certain point the trams find they can't pass. And if one tram gets stuck, the one behind does too. And the one behind that, and .... So you not infrequently find a little row of ten or so trams patiently waiting for the tow-away truck to turn up and remove the car whose bright spark of an owner decided to park it too close to the tram lines.
However, in the few instances where the roads are wide enough, the trams have their own lane down the middle of the road, with the tracks going in each direction usually divided by some scrubby, weedy grass and the odd tree.
And a few years ago, in one of these areas, some hollyhocks suddenly sprang up. There's no way they could have got there by chance - someone must have planted them intentionally. And every year since, they've multiplied, so that they now spread about 50 yards along the tram lines. Have they just self-seeded or does that same guerrilla gardener go back each year to collect the seeds and plant them again a bit further along? I suspect so, and if s/he goes on, in a few years they'll be stupendous. At that point the tramlines run for about a kilometer before they hit the road again, and a line of hollyhocks extending all the way along would be glorious.
My own hollyhocks on the balcony have done quite well this year, but the colours have been disappointing. They were supposed to be mixed, but the majority came up white, with just a couple of pinky ones and one beautiful deep red variety. The white ones would have been nice if they'd been mixed in with brighter colours, but whole containers of white were a bit boring. Nice for scanner photos though.
So despite my intention to grow them as perennials, I think I'll take most of them out at the end of the year and start again. They're full of seed heads though, and it would be a pity to waste them. Maybe I'll take a walk along the tram lines ....
