Hi, I'm writing from Winnipeg, Manitoba, Canada. We have a very short but quite a hot growing season most of the time. I just have a 10 x 12 garden plot in my backyard. We do pretty well with our veggies, for the space, but the time is limited and some tomatoes have to be brought in to ripen because of early frost. I have problems with things like spinach going to seed too early. Any advice?