Re: winterizing the garden
The guy at the hardware store called it Preen but that is not on the label, it is made by miracle grow, weed control and fertilizer. You put it on after the soil is prepared. You can use it after planting but it worked well enugh for me that I didn't have to. My garden isn't as big as yours I am sure, the gallon shaker container was big enough with some left over. I don't know if it comes in larger bags. I had never heard of it before this year.
When you are up to your butt in alligators, it is hard to remember your intent was to drain the swamp. Stay focused!