How soon start making autumn crafts?

I think most of the etsy folks start from the August usually or even earlier. I think the marketing takes time for some who sell. I know a lot of folks who do it all year with different seasonal themes.
I think the real serious people make crafts year round as the idea hits them lol That's what we did. Similar to Christmas in July. I myself tend to be outside more in the summer & living on acreage, I get different ideas in nature that I wouldn't get when I'm stuck inside in the winter. My mind also tends to be able to Accept said ideas more readily when the sun is shining :)