The garden looks great DFB. I'm a little jealous of the plants, we are pushing the barrow uphill to grow things like that over here with our alkaline, lime sands. I've just planted up a new aquarium, the co2 and lights are turned up and its growing fast so I'll post some pics soon.
CB, in regards to the crabgrass we use a selective called Fusilade, it goes under the name Kerb aswell. Bare in mind selectives are usually a higher schedule and can be expensive. In bare areas you could try Roundup, using a shroud to keep it off the other plants. A two litre bottle with the bottom cut off then gaffer taped to the wand works a treat.
Blueoval, a good edible one to try is Pineapples. Next time you get one twist off the top, pluck the bottom leaves until you see some roots, they'll be growing already and stick it in a pot or the ground.
They take a couple of years to clump and fruit but after that you should get two crops a year.
We've got some fruiting at the moment.
