Does "TPS" mean True Potato Seed? (This is a guess; I'm simply curious.)

Both of you got TPS right. I will thin it soon.

why use seed? and not seed potatoes? although I usually plant pieces of organic yukon gold I get from the farmers market.

Some of us like to experiment. since the Op was lucky enough to get viable Yukon Gold seed ( It is a hybrid) the progeny could be an entirely new variety.

This is my first time growing from TPS. Just like to have the experience. Since the weather here is warm and we can do multiple iterations of planting in a year, I will try and see if I can have a real harvest in the first year.

very interesting, wishing sucess

Here are some reasons for using true seeds: 1. If you live in Idaho, it's misdemeanor to plant seed potatoes from other states unless the sellers do some certain things. I believe regular seeds are fine. 2. If you want to breed new potatoes, there you go. Every seed is a new kind. Potatoes are normally tetraploid; so there's a lot of variation. No need to try to get them to breed true from seed (since you can just grow them from potatoes when you find one you like to get the same kind). 3. Plants grown repeatedly from seed seem to adapt more easily to the growing conditions than just the first generation. 4. True seeds are said to be less likely to be diseased than seed potatoes.

All in all, though, most people will probably still want to grow seed potatoes. TPS can take a lot longer to mature, and true to type crops are more popular than random ones.

For fast growth, you might try starting them under fluorescent lights with warmth, as close to the lights as you can get without burning the plants. That works for a lot of plants, anyway (not so much for Morelle De Balbis, though). Make sure your soil is acidic enough. If you add too much calcium, that can make your soil too alkaline. Potatoes are said to like a more acidic soil (and sandy soil).

I haven't grown many potatoes, though (although I did try some TPS in a container in 2016). I don't think our soil is acidic enough or sandy enough, though.

I've heard that TPS grow very slowly the first year and you probably can't eat much if any until the second year.

Congratulations on having the long-term vision to try it out! I'm impressed. I hope you come up with a couple of nice landraces well suited to your conditions. Best of luck!