diff --git a/README.md b/README.md
index 7b54515..89fdb27 100644
--- a/README.md
+++ b/README.md
@@ -13,12 +13,12 @@
 The API is very minimal. It allows the registering of vines and the spawning of
 existing vines on nodes of your own.
 
-If you want vines to spawn on a certain node then you can choose which vine you
-would like to spawn on by adding to the node it's group one of the following.
-
-
-
+If you want vines to spawn on a certain node then you can choose which vine by
+adding to the node groups the unique group of that vine. This is determined by
+the name of the vine ( see vines.lua ) appended with '_vines'.
+An example would be.
 
+"willow_vines" or "jungle_vines"
 
 There are two types of vines. One that spawns at the bottom of nodes and uses the
 plantlike drawtype, and vines that spawn on the side that use signlike