diff --git a/Bukkit/src/main/java/com/plotsquared/bukkit/listener/BlockEventListener117.java b/Bukkit/src/main/java/com/plotsquared/bukkit/listener/BlockEventListener117.java
index 1ef7ab09b..3787e8baa 100644
--- a/Bukkit/src/main/java/com/plotsquared/bukkit/listener/BlockEventListener117.java
+++ b/Bukkit/src/main/java/com/plotsquared/bukkit/listener/BlockEventListener117.java
@@ -31,6 +31,7 @@ import com.plotsquared.bukkit.util.BukkitUtil;
 import com.plotsquared.core.location.Location;
 import com.plotsquared.core.plot.Plot;
 import com.plotsquared.core.plot.PlotArea;
+import com.plotsquared.core.plot.flag.implementations.CopperOxideFlag;
 import com.plotsquared.core.plot.flag.implementations.MiscInteractFlag;
 import org.bukkit.block.Block;
 import org.bukkit.entity.Entity;
@@ -40,6 +41,7 @@ import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.BlockFertilizeEvent;
+import org.bukkit.event.block.BlockFormEvent;
 import org.bukkit.event.block.BlockReceiveGameEvent;
 
 import java.util.List;
@@ -137,4 +139,44 @@ public class BlockEventListener117 implements Listener {
         }
     }
 
+    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
+    public void onBlockForm(BlockFormEvent event) {
+        Block block = event.getBlock();
+        Location location = BukkitUtil.adapt(block.getLocation());
+        if (location.isPlotRoad()) {
+            event.setCancelled(true);
+            return;
+        }
+        PlotArea area = location.getPlotArea();
+        if (area == null) {
+            return;
+        }
+        Plot plot = area.getOwnedPlot(location);
+        if (plot == null) {
+            return;
+        }
+        switch (event.getNewState().getType()) {
+            case COPPER_BLOCK:
+            case EXPOSED_COPPER:
+            case WEATHERED_COPPER:
+            case OXIDIZED_COPPER:
+            case CUT_COPPER:
+            case EXPOSED_CUT_COPPER:
+            case WEATHERED_CUT_COPPER:
+            case OXIDIZED_CUT_COPPER:
+            case CUT_COPPER_STAIRS:
+            case EXPOSED_CUT_COPPER_STAIRS:
+            case WEATHERED_CUT_COPPER_STAIRS:
+            case OXIDIZED_CUT_COPPER_STAIRS:
+            case CUT_COPPER_SLAB:
+            case EXPOSED_CUT_COPPER_SLAB:
+            case WEATHERED_CUT_COPPER_SLAB:
+            case OXIDIZED_CUT_COPPER_SLAB:
+                if (!plot.getFlag(CopperOxideFlag.class)) {
+                    plot.debug("Copper could not oxide because copper-oxide = false");
+                    event.setCancelled(true);
+                }
+        }
+    }
+
 }
diff --git a/Core/src/main/java/com/plotsquared/core/plot/flag/GlobalFlagContainer.java b/Core/src/main/java/com/plotsquared/core/plot/flag/GlobalFlagContainer.java
index 4672fe28e..0fd188d54 100644
--- a/Core/src/main/java/com/plotsquared/core/plot/flag/GlobalFlagContainer.java
+++ b/Core/src/main/java/com/plotsquared/core/plot/flag/GlobalFlagContainer.java
@@ -35,6 +35,7 @@ import com.plotsquared.core.plot.flag.implementations.BlockIgnitionFlag;
 import com.plotsquared.core.plot.flag.implementations.BlockedCmdsFlag;
 import com.plotsquared.core.plot.flag.implementations.BreakFlag;
 import com.plotsquared.core.plot.flag.implementations.ChatFlag;
+import com.plotsquared.core.plot.flag.implementations.CopperOxideFlag;
 import com.plotsquared.core.plot.flag.implementations.CoralDryFlag;
 import com.plotsquared.core.plot.flag.implementations.CropGrowFlag;
 import com.plotsquared.core.plot.flag.implementations.DenyExitFlag;
@@ -193,6 +194,7 @@ public final class GlobalFlagContainer extends FlagContainer {
         this.addFlag(DenyPortalsFlag.DENY_PORTALS_FALSE);
         this.addFlag(LecternReadBookFlag.LECTERN_READ_BOOK_FALSE);
         this.addFlag(EntityChangeBlockFlag.ENTITY_CHANGE_BLOCK_FALSE);
+        this.addFlag(CopperOxideFlag.COPPER_OXIDE_FALSE);
 
         // Enum Flags
         this.addFlag(WeatherFlag.PLOT_WEATHER_FLAG_OFF);
diff --git a/Core/src/main/java/com/plotsquared/core/plot/flag/implementations/CopperOxideFlag.java b/Core/src/main/java/com/plotsquared/core/plot/flag/implementations/CopperOxideFlag.java
new file mode 100644
index 000000000..4c9dd6128
--- /dev/null
+++ b/Core/src/main/java/com/plotsquared/core/plot/flag/implementations/CopperOxideFlag.java
@@ -0,0 +1,46 @@
+/*
+ *       _____  _       _    _____                                _
+ *      |  __ \| |     | |  / ____|                              | |
+ *      | |__) | | ___ | |_| (___   __ _ _   _  __ _ _ __ ___  __| |
+ *      |  ___/| |/ _ \| __|\___ \ / _` | | | |/ _` | '__/ _ \/ _` |
+ *      | |    | | (_) | |_ ____) | (_| | |_| | (_| | | |  __/ (_| |
+ *      |_|    |_|\___/ \__|_____/ \__, |\__,_|\__,_|_|  \___|\__,_|
+ *                                    | |
+ *                                    |_|
+ *            PlotSquared plot management system for Minecraft
+ *                  Copyright (C) 2021 IntellectualSites
+ *
+ *     This program is free software: you can redistribute it and/or modify
+ *     it under the terms of the GNU General Public License as published by
+ *     the Free Software Foundation, either version 3 of the License, or
+ *     (at your option) any later version.
+ *
+ *     This program is distributed in the hope that it will be useful,
+ *     but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *     GNU General Public License for more details.
+ *
+ *     You should have received a copy of the GNU General Public License
+ *     along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package com.plotsquared.core.plot.flag.implementations;
+
+import com.plotsquared.core.configuration.caption.TranslatableCaption;
+import com.plotsquared.core.plot.flag.types.BooleanFlag;
+import org.checkerframework.checker.nullness.qual.NonNull;
+
+public class CopperOxideFlag extends BooleanFlag<CopperOxideFlag> {
+
+    public static final CopperOxideFlag COPPER_OXIDE_TRUE = new CopperOxideFlag(true);
+    public static final CopperOxideFlag COPPER_OXIDE_FALSE = new CopperOxideFlag(false);
+
+    private CopperOxideFlag(boolean value) {
+        super(value, TranslatableCaption.of("flags.flag_description_copper_oxide"));
+    }
+
+    @Override
+    protected CopperOxideFlag flagOf(@NonNull Boolean value) {
+        return value ? COPPER_OXIDE_TRUE : COPPER_OXIDE_FALSE;
+    }
+
+}
diff --git a/Core/src/main/resources/lang/messages_en.json b/Core/src/main/resources/lang/messages_en.json
index 5cc6251c0..4910dc8e6 100644
--- a/Core/src/main/resources/lang/messages_en.json
+++ b/Core/src/main/resources/lang/messages_en.json
@@ -575,6 +575,7 @@
   "flags.flag_description_redstone": "<gray>Set to `false` to disable redstone in the plot.</gray>",
   "flags.flag_description_server_plot": "<gray>Set to `true` to turn the plot into a server plot. This is equivalent to setting the server as the plot owner.</gray>",
   "flags.flag_description_snow_form": "<gray>Set to `true` to allow snow to form within the plot.</gray>",
+  "flags.flag_description_copper_oxide": "<gray>Set to `true` to allow copper to oxide within the plot.</gray>",
   "flags.flag_description_snow_melt": "<gray>Set to `true` to allow snow to melt within the plot.</gray>",
   "flags.flag_description_soil_dry": "<gray>Set to `true` to allow soil to dry within the plot.</gray>",
   "flags.flag_description_coral_dry": "<gray>Set to `true` to allow coral blocks to dry within the plot.</gray>",