I agree with Danz re the Brussels Sprouts. It sounds like they are bolting and once they start to bolt, you really can't do anything to stop them. I had mustard greens and one type of kale that bolted so I pulled out the plants and replanted seeds. Although it is still warm, by the time they germinate and start to grow and get to the point they are mature enough to eat, I'm hoping it will be fall and cool enough that they will just produce edible leaves instead of trying to bolt.
Cherwill, my hat is off to you - that is a huge amount of garden space. Ours is 50' long by 24' wide but the cardboard makes the usable area about 40x16 and I've found even keeping up on the weeds with that amount of space has been a lot of hard work. With all the rain we had this year, the weeds wanted to take off and we had to spend many, many hours out there keeping them under control.
I grew my Cherokee Purples from seed this year - along with all my other tomatoes. The only one I planted from a seedling is called "Mr. Stripey" and it is an heirloom that we saw at Dillons on Mother's Day. DH bought it for me as a Mother's Day gift. I should add that although i started from seed, I did it indoors so it was seedlings I was planting outdoors after last frost. Do you save seeds from your tomatoes? I still have lots of seeds left from this year's planting and since I store them in the fridge, I think they should be fine to use again next year. But I do also plan to save some seeds from my own fruits this year. It would take a lot of organization but I read a blog where the lady saves the seeds from every single thing she cuts into. Then, after they've eaten it, she only dries and saves the seeds from the best-tasting fruits. In other words, if she cuts into 6 of the same variety of tomatoes, she saves seeds from each of them but discards those from the 5 that weren't quite as tasty as the 6th. I can't imagine how you set them aside and remember which seeds came from which fruit!!! Her opinion is that not all fruits are created equal even coming off the same plant. I can see where that would be true but I don't think my taste buds are refined enough to pick up subtle differences like that!