Thanks Dave. I didn't dig all of them out. So I will leave them in the soil till they die back.

did you grow them from true seed or seed potatoes?

True seeds.

ha that must be what tps means. pretty cool. where do you get seed?

I saved the seeds from the potato I grew last year. First time for me. Amazed that the germination rate is so high. But I am puzzled why all of them quit growing after reaching only 2-3" tall.

"But I am puzzled why all of them quit growing after reaching only 2-3" tall."

Several possible explanations for that and they are all dependent on the "growing conditions" you provided. Could be lack of nutrients, insufficient or too much water, overly warm soil, insufficient sun exposure, compacted soil, overly crowded, etc. etc. etc.

Dave