Most of the artificial plant panels we sell (with the exception of our inherently fire retardant panels) are according to the European standard (EN13501-1:2007+A1:2009) classified as fire behaviour class B, which means that they have a limited contribution to a fire.
The test results are as follows:
SGS test report No AJFS1908008291FF
Date 24 Sept 2019
Fire behaviour B
Smoke production s2
Flaming droplets d0
If your risk assessment requires the artificial plant panels to meet a specific fire safety requirement higher than class B you would have to spray them with a fire-retardant treatment spray such as Envirograf 321 Fire Retardant Spray (EV321S Special: Plastic artificial plants / flowers and decorations).