diff --git a/packages/farm/src/resources/decorators/room.js b/packages/farm/src/resources/decorators/room.js
index 1604dbe..31f37d4 100644
--- a/packages/farm/src/resources/decorators/room.js
+++ b/packages/farm/src/resources/decorators/room.js
@@ -95,12 +95,14 @@ export default (Room) => class FarmableRoom extends Room {
     return DIRT === tiles.tileAt(target);
   }
 
-  maySowAt(target) {
+  maySowAt(center) {
     const [tiles] = this.tiles;
+    const {tileSize} = tiles;
+    const target = Vector.floor(Vector.div(center, tileSize));
     return (
       'client' !== process.env.SIDE
       && TILLED === tiles.tileAt(target)
-      && !this.isPlantAt(target)
+      && !this.isPlantAt(center)
     );
   }