Hi Steve - My season is usually plant mid May and harvest early to mid October. I think most of my varieties are mid-season but I’ve found what matters most for me is if they bulk up early, no matter what category they are in because we have significant blight issues. If they bulk early I get a crop even if the plants die of blight later.
I’ve grown Purple Viking for 8 yrs; it’s a decent potato but is up and down for me as far as yields. It tends toward growth cracks and blight for me but I’ve kept growing it because it usually has decent yields and I like the potato. Attractive, too. But it’s not in the top tier.
My favorite and most reliable is Jogeva Yellow Estonian. Been growing that for 20 yrs but I’m not sure how available it is.
Sangre is my best red (since 2010).
My most interesting is Blue-Eyed Catriona, an old variety I’ve been growing for 15 yrs. My plants are highly variable as far as blight; I’ll have complete early dieout to some of the latest to get blight. It often gives many small spuds, but the overall yield is almost always one of the best because it sets early. It’s my favorite flavor wise, too. It’s probably in the early category because it’s not the best keeper.
A new one for me, Elba, has grown well and with good yields the past 2 yrs.
Others have come and gone over the years but it’s always nice to try some new ones. I try to limit mine to ten. Fun this time of year to think of planting! Sue