diff --git a/elements/growroot/README.rst b/elements/growroot/README.rst
index c05150e6c..33a5d27e5 100644
--- a/elements/growroot/README.rst
+++ b/elements/growroot/README.rst
@@ -4,4 +4,8 @@ growroot
 
 Grow the root partition on first boot.
 
-This only supported on ubuntu trusty or later.
+This is only supported on:
+
+* ubuntu trusty or later
+* gentoo
+* fedora & centos
diff --git a/elements/growroot/init-scripts/openrc/growroot b/elements/growroot/init-scripts/openrc/growroot
new file mode 100755
index 000000000..4656fbcf7
--- /dev/null
+++ b/elements/growroot/init-scripts/openrc/growroot
@@ -0,0 +1,10 @@
+#!/sbin/runscript
+
+start() {
+    /usr/local/sbin/growroot
+    eend 0
+}
+
+depend() {
+    need localmount
+}
diff --git a/elements/growroot/pkg-map b/elements/growroot/pkg-map
index 1fa644d7f..43d4ec7cf 100644
--- a/elements/growroot/pkg-map
+++ b/elements/growroot/pkg-map
@@ -7,6 +7,10 @@
         "debian":{
             "growpart": "cloud-utils",
             "e2fsprogs": "e2fsprogs"
+        },
+        "gentoo": {
+            "growpart": "sys-fs/growpart",
+            "e2fsprogs": "sys-fs/e2fsprogs"
         }
     }
 }