I don't think this is a silly question at all. Of course I've thought about that. I married the first time rather young, and my husband's family did what amounted to subsistence farming. That's a great way to learn how to produce as much food as possible and how to preserve it. Preserving your food is as important as growing it. It's really sad that so much 'common sense' about producing food has been lost in so few generations. I'm not just talking about canning, either. If you really had to survive without buying supplies, today's canning methods require an endless supply of replace-ables like lids and occasionally rings. It's a heck of a lot safer than the old methods where people did die of 'summer complaint' and botulism with some regularity. LOL. In cooler climates you have a root or storage cellar. It not only kept things from freezing, it kept them cool too and root crops held a good long time. One also took advantage of their spring to keep perishables fresh. One of my houses had a dairy trough in the cellar where the spring flow was diverted inside and milk/butter and cheeses were kept in there to prevent spoilage. One sweetened with sorghum, which is almost a lost art anymore, but was commonplace in my lifetime back in the Ozarks. So were wild honeybee trees, but no more with the diseases. You need to think protein sources and that means legumes, dairy (and milk goats are a good idea), fowl. I still live this lifestyle, more by choice now than necessity, but it does save us a mint at the market. I put up hundreds of quarts of fruits, veggies and sometimes meats each year to last us to the next. Even people in cities would be surprised at how much of their own food supply they can grow if they wanted to. Instead of an ornamental flowering tree, a fruit tree is just as pretty and gives you something in return. So do nut trees. I have plenty of both. And I have a bramble patch for berries, and did have an Alpine berry patch. There is no reason one cannot perpetuate a June bearing strawberry patch, btw. You can root runners and they produce them. I have three different kinds of grapes, too. A large flock of chickens, and dairy goats on on the horizon, if I can get my husband used to the idea of more livestock. LOL. BTW, I do make butter, and cream from goats is not like cream from cows. If you want to make butters or cheeses, you'll need a separator. BTW, onions are nice, but leeks and shallots should be planted as well because when the onions give up the ghost half way through winter, I am still using my shallots I dried and braided from last year's garden and the quality is still great, and leeks can be harvested clean through winter. Somebody asked "Are you able to "dispatch" any squieerls or rabbits who threaten your food suppily? You may want to learn to shoot." (sic) Lemme tell you, squirrel and rabbit are wonderful and plentiful meat sources. They aren't just varmints one dispatches from a garden. Fried squirrel and gravy is hard to beat. And, actually the world won't end if a hybrid cross pollinates against a self fertile strain. Sometimes you get less than the original, but sometimes you are pleasantly surprised. The most important thing is if you are planting fruit trees, to be sure that you know which one need pollinating against another, and what varieties pollinate which. Bloom time is important, because if they don't bloom at the same time, you are going to have a problem exchanging pollen. This isn't stuff you sit down, read from a book and then expect to do without practice. The first times at a lot of self-sufficiency skills can be flops. Start honing your skills now. I've worked on it a lifetime and still have a lot to discover. The old Foxfire series of books are a good start.

Off the top of my head no....I'm in ontario too but I have some dwarf apple trees...B9, M9, M26 Honeycrisp, Go to the government web page for ontario "Apples in ontario" on google should give you plenty.

Certainly if the "rootstock" branch has trifoliate leaves, it is not a Meyer lemon branch, and should have been cut from the tree a long time ago, as it is utilizing the tree's energy. This energy otherwise would have been allocated to the Meyer lemon's growth.

Lately I only care about roses grafted on Fortuniana for where I live - California. They are way more vigorous then Dr Huey! I just found out all my roses are on Fortuniana except: Angel Face, Fragrant Cloud, - which are wimpy roses. Queen Elizabeth and Double Delight on Dr. H. are doing fine, but I am sure on Fortuniana they will do way better.