diff --git a/src/environment.cpp b/src/environment.cpp
index 135e41e..a2b2df6 100644
--- a/src/environment.cpp
+++ b/src/environment.cpp
@@ -1322,8 +1322,10 @@ void ServerEnvironment::step(float dtime)
 							}else if (content_features(testnode).draw_type == CDT_MELONLIKE) {
 								if (content_features(testnode).param2_type == CPT_PLANTGROWTH)
 									plantgrowth_plant(this,test_p);
+							}else if (testnode.getContent() == CONTENT_CACTUS) {
+								plantgrowth_cactus(this,test_p);
 							}else if (testnode.getContent() == CONTENT_FERTILIZER) {
-									plantgrowth_fertilizer(this,test_p);
+								plantgrowth_fertilizer(this,test_p);
 							}else if (testnode.getContent() == CONTENT_AIR) {
 								int chance = 5;
 								if (water_found == 1)
diff --git a/src/plantgrowth.cpp b/src/plantgrowth.cpp
index 1b75b41..8ed1f6b 100644
--- a/src/plantgrowth.cpp
+++ b/src/plantgrowth.cpp
@@ -558,3 +558,22 @@ void plantgrowth_grass(ServerEnvironment *env, v3s16 p0)
 	if (add)
 		env->getMap().addNodeWithEvent(p0,n);
 }
+
+void plantgrowth_cactus(ServerEnvironment *env, v3s16 p0)
+{
+	int height = 1;
+	for (;; height++) {
+		MapNode nn = env->getMap().getNodeNoEx(p0+v3s16(0,height,0));
+		if (nn.getContent() == CONTENT_AIR) {
+			break;
+		}else if (nn.getContent() != CONTENT_CACTUS || nn.envticks < 5) {
+			return;
+		}
+	}
+
+	if (height > 4 || myrand_range(0,3) != 0)
+		return;
+
+	MapNode n(CONTENT_CACTUS);
+	env->getMap().addNodeWithEvent(p0+v3s16(0,height,0),n);
+}
diff --git a/src/plantgrowth.h b/src/plantgrowth.h
index 8c77994..3bb289f 100644
--- a/src/plantgrowth.h
+++ b/src/plantgrowth.h
@@ -32,5 +32,6 @@ void plantgrowth_fertilizer(ServerEnvironment *env, v3s16 p0);
 void plantgrowth_seed(ServerEnvironment *env, v3s16 p0);
 void plantgrowth_plant(ServerEnvironment *env, v3s16 p0, s16 height=0);
 void plantgrowth_grass(ServerEnvironment *env, v3s16 p0);
+void plantgrowth_cactus(ServerEnvironment *env, v3s16 p0);
 
 #endif