Howdy, and thank you for your inquiry. Most of the retail outlets that generally stock fruit trees in the local area are improving offering for fall sales and may not currently carry the nectarine variety you seek. I have created a list of local area nurseries, garden centers and feed stores and available for download from the Brazoria County AgriLife Extension Horticulture webpage: https://brazoria.agrilife.org/horticulture/. Several regional Texas Master Gardener chapters (Brazoria, Sept. 18; Fort Bend, Galveston, Harris) will host fall plant sales as part of fundraising efforts and may be an option for review and availability.

In the meantime, outlets listed below will generally carry fruiting trees on a consistent basis and some will have their stock posted online:

Caldwell Nursery (Rosenberg; http://caldwellhort.com/)

Buchanan’s Native Plants (Houston; https://buchanansplants.com/http://caldwellhort.com/)

Enchanted Gardens Nursery (Rosenberg; https://www.myenchanted.com/)

Maas Nursery (Seabrook; https://maasnursery.com/)

Wells Florist and Nursery (Sweeny): https://www.wellsflorist.com/

Wishing you all the best, and much success on your search. Feel free to contact me directly if I can be of further service.