diff --git a/include/Components/Resource.hpp b/include/Components/Resource.hpp
index 07f3888..0bcbda7 100644
--- a/include/Components/Resource.hpp
+++ b/include/Components/Resource.hpp
@@ -37,9 +37,7 @@ inline void Flecs_Resource(flecs::world& world)
 	
 	world.component<ResourceHealth>()
 		.member<uint16_t>("MaxHealth")
-		.member<uint16_t>("Health")
-		.member<uint16_t>("RenewalTicks")
-		.member<uint16_t>("Renewal");
+		.member<uint16_t>("Health");
 
 	world.component<ResourceTick>()
 		.is_a<TickAccumulator>();
@@ -50,9 +48,6 @@ inline void Flecs_Resource(flecs::world& world)
 	world.component<Renewing>()
 		.add<Freezes, ResourceTick>();
 
-	world.component<Renewing>()
-		.add<Freezes, ResourceTick>();
-
 	// harvesting resource to world inventory
 	world.system<const ResourceInfo, const ResourceTick, WorldInventory>()
 		.kind(flecs::OnUpdate)
@@ -70,11 +65,10 @@ inline void Flecs_Resource(flecs::world& world)
 		});
 	
 	// decrease health if ResourceHealth component
-	world.system<const ResourceHealth, const ResourceTick>()
+	world.system<ResourceHealth, const ResourceTick>()
 		.kind(flecs::OnUpdate)
 		.without<Renewing>()
 		.each([](ResourceHealth& health, ResourceTick tick){
-			if (tick.)
 			health.Health -= tick.Finished();
 		});
 
@@ -91,7 +85,17 @@ inline void Flecs_Resource(flecs::world& world)
 		});
 
 	// finish renewing
-	
+	world.system<ResourceHealth, RenewingTick>("Finish Renewing")
+		.kind(flecs::OnUpdate)
+		.with<Renewing>()
+		.each([](flecs::entity entity, ResourceHealth& health, RenewingTick& tick) {
+			if (tick.Finished()) {
+				health.Health = health.MaxHealth;
+				entity.remove<Renewing>();
+				entity.add<FullyGrown>();
+				entity.ensure<ResourceTick>().AccumulatedTick = 0;
+			}
+		});
 }
 
 inline void Resource_Ore_Helper(const flecs::entity& entity, uint16_t resourceID, uint16_t gatherTicks)
@@ -104,4 +108,21 @@ inline void Resource_Ore_Helper(const flecs::entity& entity, uint16_t resourceID
 
 	entity.set<ResourceInfo>(info);
 	entity.set<ResourceTick>(tick);
+}
+
+inline void Resource_Tree_Helper(const flecs::entity& entity, uint16_t resourceID,
+	uint16_t gatherTicks, uint16_t maxHealth, uint16_t renewalTicks)
+{
+	Resource_Ore_Helper(entity, resourceID, gatherTicks);
+
+	ResourceHealth health{};
+	health.MaxHealth = maxHealth;
+	health.Health = maxHealth;
+
+	RenewingTick tick{};
+	tick.MaxTick = renewalTicks;
+
+	entity.set<ResourceHealth>(health);
+	entity.set<RenewingTick>(tick);
+	entity.add<FullyGrown>();
 }
\ No newline at end of file
diff --git a/tests/Components/test_Resource.cpp b/tests/Components/test_Resource.cpp
index aa2cac7..1b0544a 100644
--- a/tests/Components/test_Resource.cpp
+++ b/tests/Components/test_Resource.cpp
@@ -41,3 +41,94 @@ TEST_SUITE("Resource") {
 		CHECK(inv.GetItemsAmount(stoneID) >= 1);
 	}
 }
+
+TEST_SUITE("Resource - Health & Renewing") {
+	TEST_CASE("tree resource loses health each gather cycle") {
+		WorldConfig config{};
+		uint16_t woodID = config.RegisterItem("Wood");
+
+		WorldInstance world{ config };
+
+		auto entity = world.GetEcsWorld().entity();
+		Resource_Tree_Helper(entity, woodID, 1, 3, 5);
+
+		world.ProcessFrame();
+
+		auto& inv = world.GetEcsWorld().ensure<WorldInventory>();
+		CHECK(inv.GetItemsAmount(woodID) == 1);
+
+		auto health = entity.get<ResourceHealth>();
+		CHECK(health.Health == 2);
+	}
+
+	TEST_CASE("tree enters renewing state when health reaches 0") {
+		WorldConfig config{};
+		uint16_t woodID = config.RegisterItem("Wood");
+
+		WorldInstance world{ config };
+
+		auto entity = world.GetEcsWorld().entity();
+		Resource_Tree_Helper(entity, woodID, 1, 2, 5);
+
+		// 2 gather cycles to deplete health
+		world.ProcessFrame();
+		world.ProcessFrame();
+
+		auto& inv = world.GetEcsWorld().ensure<WorldInventory>();
+		CHECK(inv.GetItemsAmount(woodID) == 2);
+		CHECK(entity.has<Renewing>());
+
+		// one more tick should not produce items while renewing
+		world.ProcessFrame();
+		CHECK(inv.GetItemsAmount(woodID) == 2);
+	}
+
+	TEST_CASE("tree restores health after renewal period") {
+		WorldConfig config{};
+		uint16_t woodID = config.RegisterItem("Wood");
+
+		WorldInstance world{ config };
+
+		auto entity = world.GetEcsWorld().entity();
+		Resource_Tree_Helper(entity, woodID, 1, 1, 5);
+
+		// 1 gather cycle depletes health
+		world.ProcessFrame();
+		CHECK(entity.has<Renewing>());
+
+		// 5 ticks for renewal
+		for (int i = 0; i < 5; ++i)
+			world.ProcessFrame();
+
+		CHECK_FALSE(entity.has<Renewing>());
+		CHECK(entity.has<FullyGrown>());
+
+		auto health = entity.get<ResourceHealth>();
+		CHECK(health.Health == health.MaxHealth);
+	}
+
+	TEST_CASE("tree resumes gathering after renewal") {
+		WorldConfig config{};
+		uint16_t woodID = config.RegisterItem("Wood");
+
+		WorldInstance world{ config };
+
+		auto entity = world.GetEcsWorld().entity();
+		Resource_Tree_Helper(entity, woodID, 1, 1, 5);
+
+		// deplete
+		world.ProcessFrame();
+		auto& inv = world.GetEcsWorld().ensure<WorldInventory>();
+		CHECK(inv.GetItemsAmount(woodID) == 1);
+
+		// renew (5 ticks)
+		for (int i = 0; i < 5; ++i)
+			world.ProcessFrame();
+
+		CHECK_FALSE(entity.has<Renewing>());
+
+		// should gather again
+		world.ProcessFrame();
+		CHECK(inv.GetItemsAmount(woodID) == 2);
+	}
+}