In the scene, there are two Kampsis plants on a support (on the wall and on the arch) 3.5 meters high:

Name: Campsis_trumpet_creeper_2014
Version: 2014
Units: Centimeters

Dimension: 551 x 226 x 323
460x287x353

Polys: 1072601
867 716

XForm:Yes
Box Trick: Yes
Model Parts: 2
Render: Corona, vray
Formats: 3Ds Max 2014, OBJ
Material library: Corona, Vray

Those who work in V-Ray versions lower than 3.1, be careful, in the materials in the BRDF section there is Microfaset GTR ( GGX ), if your version is older than 3.1, then the BRDF field will be empty. Choose Blinn, Phong or Ward - whatever suits you best.
For Corona render, it is recommended to install a version of at least 1.5, since the glossiness of materials is configured with PBR in mind.