diff --git a/EduNetworkBuilder/Network.cs b/EduNetworkBuilder/Network.cs
index 473b41a..457c509 100644
--- a/EduNetworkBuilder/Network.cs
+++ b/EduNetworkBuilder/Network.cs
@@ -1536,7 +1536,7 @@ namespace EduNetworkBuilder
             return null;
         }
 
-        public List<string> GetHostnames(bool EvenNonNetworked = false)
+        public List<string> GetHostnames(bool EvenNonNetworked = false, bool includeTrees = false)
         {
             List<string> tList = new List<string>();
             NetworkDevice ND;
@@ -1547,6 +1547,7 @@ namespace EduNetworkBuilder
                     ND = (NetworkDevice)NC;
                     if (!EvenNonNetworked && (ND.GetNetType() == NetworkComponentType.microwave || ND.GetNetType() == NetworkComponentType.fluorescent))
                         continue;
+                    if (ND.GetNetType() == NetworkComponentType.tree && !includeTrees) continue;
                     tList.Add(ND.hostname);
                 }
             }