Mixed True Potato Seeds (TPS), Tetraploid, Wide Mix

True potato seed information and growing instructions

This mix includes seeds derived from OSSI open source varieties.

True potato seeds are classified as breeding seeds and germination is not guaranteed.

If you have never grown potatoes from seed before, this is the mix that I recommend. The potatoes that most of us are familiar with are tetraploid.  Virtually any potato that you find at the grocery store is a modern tetraploid variety.  Tetraploids tend to be larger and higher yielding than other types of potatoes.  They also usually have one very important trait: dormancy.  Tetraploids will usually have at least eight weeks of dormancy, which makes them pretty easy to store through the winter.  This mix includes modern tetraploids and also Andean tetraploids.  The modern tetraploids tend to be better adapted for North America, but they aren’t as diverse as Andean potatoes.  The Andean tetraploids have a greater range of shapes and skin and flesh color, but some of them won’t produce tubers until fall due to short day photoperiod.  Between the two types, you can expect a lot of variability in the seedlings.  I’d say that the mix runs about 60% Andean and 40% modern most years.

The picture above is an output photo of a full bed of seedlings grown from this mix, so it will give you a pretty good idea of what you can expect.  What it doesn’t show are the plants that produce tiny tubers or no tubers or that died early in the season.  You will always get some of those when you grow potatoes from seed.

Germination

2024

Final germination
Days to first germination
Days to final germination/2
Days to final germination