Not Garden, since the very definition of that code is that it is Earth-like.
The rest of the stats that define a Trade Code are based on human (or near human) requirements. No Agricultural trade code can exist with an Exotic atmosphere for example, even if the world is filled with methane breathing farmers.
Also, I don't see how Temperature is Optional in your World Creation rules. At the bottom of page 226, you say that "then also apply DMs for temperature." (doesn't sound optional)
However, I do agree that the Temperature roll is within a Text Box, which could indicate that it is optional, but it sure is a nice feature.
There is nothing in the Rivals, Factions, Connections & Colonies section or the Cultural Differences section that indicates it is optional.
I completely understand that these are not part of the standard UWP, but they are part of the Mongoose world process. I just think that if you are going to have people roll them up, then you could provide that information in your published sector and sub-sector data.