I just started last summer because I had a load of black raspberries and enough jam to last until the Apocalypse. Once I started that batch ~ BAM. I also have lots of excess melons from the garden, a good apple crop, lots of grapes, plenty of strawberries (and already plenty of jam, again)...then....... HEY - I can make wine from rhubarb, too - I got rhubarb, and look at that recipe - Mint Wine, I like mint, I got mint................
Before I knew it - I had 7 batches going, then it was fall, which is cranberry season in WI, so..........
I always picked and froze most of my fruit during the spring & summer because we made jam in the winter. Turns out - that's a good method for wine making, too. I still have 3, 2 gal batches I stabilized a month a go & just backsweetened - a black raspberry, strawberry-rhubarb, & the cranberry - I'll bottle them in a month or so.
I don't have anything in the fermenter right now. Which is OK - I need to start the garden, but now I do it with the idea of "what can I grow that will make a good wine".