Guys, lots of fun and good info here, but . . my broccoli keeps on producing side shoots in the leaf axils for a couple of months after I harvest the big central head. I plant 3 plants in the fall and 3 plants in December, and they keep us in broccoli for the whole winter and well into spring (just two of us, mind you!) You might want to try it again, with this in mind (if you like broccoli). Some types produce side shoots better than others, so check the description first.
I grow in Earth Boxes with very limited space, but this is one thing that earns its space for me! Cauliflower and cabbage, so right - they only produce one and they're done. Too much space for too little return.
One other thing you might want to mention in your next episode of this topic, heirloom tomatoes, sadly, do not do well for me down here *but did great in Utah, because of too little disease resistance. Could this be why you have not had success with the Cherokee Purple? I'm afraid I buy the ones with all the letters and numbers now. Btw there is a good US seed supplier near us with a great selection of tomatoes as well as peppers - Tomato Growers Supply.
http://www.tomatogrowers.com/