None of those are made by Serpy. The rail is by @Vondell and was already teased last year in the project thread:
The recoloured woodslat fences done by @voltamercury. Also not yet released.
Edit: the recoloured woodslat viewing area is also part of the set.
The one fence that Serpy made in the image is the very low-lying fence bordering the decorative plant patches. That was intended for personal use last I checked, but Zootan released a set that you can use if you like that style of fencing.