I gave away all the seedling from that batch 5 years ago.
Glacially slow in Santa Cruz. They were still 2-3" tall after 3 years.
Thanks for bringing them in though, only time I have seen them available.
You have to taste fresh S. queretaroensis to see why. The poor shelf life, limited season between May to July depending on year, and potential for crop failure is high. The monsoon rains coming to soon during the final ripening can ruin crop.
The flavor is more fruity and sweet intensity compared to dragon fruit. The texture is like a dragon fruit mixed with a ripe fig. It's syrupy sweet with intense berry flavors. Some can taste like raspberry jam. This was my experience with them at least from the plants producing in Southern Zacatecas.
This cactus is worth the trouble to grow. I can see potential in interior warm areas 9B or higher of Southern CA, Southern Nevada, and Southern Arizona.
It can take a while to fruit from seed 7 years or more. Mature cuttings are hard to source. I am 5 years in from ones grown from seeds.
My largest surviving is a seedling from a large orange fruit which was the sweetest of the fruits I tried. I am hoping in the next 2 years I can get it to flower.
I would try grafting to dragon fruit, Cereus sp., or Echinopsis sp. To see how it would respond. Currently I have about 10 seedlings left between CA and FL. They are slow here in southern CA only putting on good growth during July and August. In Florida puts on nice growth from May to October.
It likes temps in the 90s with full sun and nights in the 80s to really grow fast. Does not mind humidity as long as the root zone is not sitting in water for long and it's warm above 70f.
Central and Northen coastal CA does not have enough heat units to really push the plants. Fresno would be the northern range possibly protected to get a chance at a crop.