diff --git a/mods/flowers/init.lua b/mods/flowers/init.lua
index f5955d8c..db7a4eb3 100644
--- a/mods/flowers/init.lua
+++ b/mods/flowers/init.lua
@@ -107,9 +107,16 @@ function flowers.flower_spread(pos, node)
 	pos.y = pos.y - 1
 	local under = minetest.get_node(pos)
 	pos.y = pos.y + 1
+	-- Replace flora with dry shrub in desert sand and silver sand,
+	-- as this is the only way to generate them.
+	-- However, preserve grasses in sand dune biomes.
+	if minetest.get_item_group(under.name, "sand") == 1 and
+			under.name ~= "default:sand" then
+		minetest.set_node(pos, {name = "default:dry_shrub"})
+		return
+	end
+
 	if minetest.get_item_group(under.name, "soil") == 0 then
-		-- Do not replace with dry shrub here as
-		-- this breaks flower pots and other mods.
 		return
 	end