I've been inspired by a fantastic old wartime leaflet encouraging everyone to get out there and plant out a veg plot. I haven't got an allotment but I have got a roof garden. I've spent a very pleasant few days designing the perfect rooftop veg plot.
The whole thing is based on a 600mm grid, which I reckon is large enough to grow any plant. Low growing salads and herbs will be planted in the centre of the plot - so that there is still room to sit out on sunny days.
When I lived in Petersfield I had a greenhouse and grew some wonderful things. I was pining for the greenhouse, when I realised that I have a wide south/west facing bay window here in Great Titchfield Street which gets light from a rooflight above as well as directly through the window.
I've started planting up salads, tomatoes and some greens. I've worked out that my shelf is larger than my greenhouse staging, so there should be loads of room for seedbeds and potting on. Here's a picture of what it looks like today.
The planting beds on the roof will add up to about 7m2 of planting area, and there is another 2m2 on this shelf. That's a lot less than the 300m2 recommended by the wartime leaflet, but enough to make a difference to my veg bill, I hope.