In TRS19 I created a single-board route where I laboriously planted - in rows - an example of every single tree/ plant that the Platinum-edition had to offer.
I used it as a reference for choosing or avoiding particular trees for any new route I was creating at the time.
The 'plantation' takes some time to create initially - but it saves a lot of time and effort when seeking out the perfect vegetation options for the new route you're creating later.
Note that there's also a built-in route from Auran that contains content samples of various assets, including desert vegetation, included in TRS19 and TRS22.
<kuid2:661281:200019:8> Content Samples #1 (TRS19 version)
If you hover your mouse over the plants/ items in Route edit... 'Objects, Get Object...' mode, it will reveal the name of the asset so you can choose to include - or exclude - that item from your own route creations.