Hi Fatima,
a while ago I came across the website of a Polish engineering company. They developed a TRNSYS model for a vegetated wall and offer the beta version for free.
Here’s the URL of the webpage
https://www.cim-mes.com.pl/en/research/green-wall-impact-on-the-building-energy-balance
Good luck with your simulations
Doris
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Dipl.-Phys. Doris Buck
Auer Str. 43
D-76227 Karlsruhe
Tel.: +49(0)721 493756
E-Mail: dg.buck@t-online.de