All these plants and flowerpots are not just 3D models, but 3D models for which there are
real life counterparts and can be purchased for landscaping your projects from Treez Collection.

Plants:
Eucalyptus silver multi-stemmed (10.22006N, height 2000mm): https://treez.ru/cat/good/10.22006N.html 
Crossostephium (Miller) ball (10.56602N, height 600mm): https://treez.ru/cat/good/10.56602N.html 

Flowerpot:
TREEZ Effectory Flowerpot - Organic - Low Bowl - Glacier Gray (height 290mm): https://treez.ru/cat/good/41.33-15-23-099-GR.html?SECTION_ID=4148 
TREEZ Effectory Flowerpot - Organic - High Bowl - Glacier Gray (height 580mm): https://treez.ru/cat/good/41.33-15-23-100-GR.html 

Those who work in V-Ray version 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, the BRDF field will be empty. Select Blinn, Phong or Ward - what is preferable for you.

For Corona render, it is recommended to install version no lower than 1.5, since the glossiness of materials is configured taking into account PBR.