With summer nearly at an end, I decided to celebrate the change in season by stirring up a giant pot of Italian vegetable soup, full of the bits and pieces left in my friends' gardens and passed along to me: zucchini, green beans, a couple of potatoes, fennel, kale, a few heads of garlic. This soup welcomes most stragglers, in any amount, so if your garden didn't give you fennel, but did leave you with more than a few zucchini, simply use what you've got. I added canned tomatoes, which are always on my pantry shelf, but if you have fresh tomatoes, or your own home-canned stewed tomatoes, by all means use those instead. If you're gluten-free, omit the couscous. Vegans can skip the parmesan cheese. And busy moms or dads can make a batch of this soup at the beginning of the week, and add leftover chicken or turkey sausage to make quick school night dinners.