Yes, you can definitely use fake plants and trees outdoors. However, not all artificial plants and trees are suited for outdoor use, the same for the artificial plant walls. Created from various materials including silk, plastic and polylines, there are certain foliage types which can withstand extreme weather conditions. As mentioned before, only the ones which are marked suitable for outdoor use can. These plants and trees make use of fade resistant technology which prevents them from losing color in outdoor areas. Outdoor plastic plants and artificial lawn can be used in exterior areas without worrying about color loss due to harsh sun, wind, water, and snow. If you aren’t able to locate your favorite flowers and plants which can be used outdoors, then you can use UV resistant spray to make them fade resistant. However, you also can buy UV resistance fake plants directly.