diff --git a/cmd/create-repo.go b/cmd/create-repo.go
index 9322cf04..05db0494 100644
--- a/cmd/create-repo.go
+++ b/cmd/create-repo.go
@@ -50,7 +50,7 @@ var createrepoCmd = &cobra.Command{
 		var err error
 		var repo installer.Repository
 
-		tree := viper.GetString("tree")
+		treePaths := viper.GetStringSlice("tree")
 		dst := viper.GetString("output")
 		packages := viper.GetString("packages")
 		name := viper.GetString("name")
@@ -74,8 +74,8 @@ var createrepoCmd = &cobra.Command{
 				Fatal("Error: " + err.Error())
 			}
 
-			if tree == "" {
-				tree = lrepo.TreePath
+			if len(treePaths) <= 0 {
+				treePaths = []string{lrepo.TreePath}
 			}
 
 			if t == "" {
@@ -87,12 +87,12 @@ var createrepoCmd = &cobra.Command{
 				lrepo.Urls,
 				lrepo.Priority,
 				packages,
-				tree,
+				treePaths,
 				pkg.NewInMemoryDatabase(false))
 
 		} else {
 			repo, err = installer.GenerateRepository(name, descr, t, urls, 1, packages,
-				tree, pkg.NewInMemoryDatabase(false))
+				treePaths, pkg.NewInMemoryDatabase(false))
 		}
 
 		if err != nil {
@@ -131,7 +131,7 @@ func init() {
 		Fatal(err)
 	}
 	createrepoCmd.Flags().String("packages", path, "Packages folder (output from build)")
-	createrepoCmd.Flags().String("tree", path, "Source luet tree")
+	createrepoCmd.Flags().StringSliceP("tree", "t", []string{}, "Path of the source trees to use.")
 	createrepoCmd.Flags().String("output", path, "Destination folder")
 	createrepoCmd.Flags().String("name", "luet", "Repository name")
 	createrepoCmd.Flags().String("descr", "luet", "Repository description")
diff --git a/pkg/installer/installer_test.go b/pkg/installer/installer_test.go
index 4f72025b..55c97a6c 100644
--- a/pkg/installer/installer_test.go
+++ b/pkg/installer/installer_test.go
@@ -82,7 +82,7 @@ var _ = Describe("Installer", func() {
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.package.tar"))).To(BeTrue())
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.metadata.yaml"))).To(BeTrue())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/buildable", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/buildable"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -198,7 +198,7 @@ urls:
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.package.tar"))).To(BeTrue())
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.metadata.yaml"))).To(BeTrue())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/buildable", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/buildable"}, pkg.NewInMemoryDatabase(false))
 			treeFile := NewDefaultTreeRepositoryFile()
 			treeFile.SetCompressionType(compiler.None)
 			repo.SetRepositoryFile(REPOFILE_TREE_KEY, treeFile)
@@ -316,7 +316,7 @@ urls:
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.package.tar"))).To(BeTrue())
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.metadata.yaml"))).To(BeTrue())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/buildable", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/buildable"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -434,7 +434,7 @@ urls:
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.package.tar"))).To(BeTrue())
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.metadata.yaml"))).To(BeTrue())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/buildable", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/buildable"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -500,7 +500,7 @@ urls:
 			Expect(err).ToNot(HaveOccurred())
 			Expect(helpers.Exists(artifact.GetPath())).To(BeTrue())
 
-			repo, err = GenerateRepository("test", "description", "disk", []string{tmpdir2}, 1, tmpdir2, "../../tests/fixtures/alpine", pkg.NewInMemoryDatabase(false))
+			repo, err = GenerateRepository("test", "description", "disk", []string{tmpdir2}, 1, tmpdir2, []string{"../../tests/fixtures/alpine"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			err = repo.Write(tmpdir2, false)
 			Expect(err).ToNot(HaveOccurred())
@@ -569,7 +569,7 @@ urls:
 
 			Expect(errs).To(BeEmpty())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/upgrade", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/upgrade"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -695,7 +695,7 @@ urls:
 			_, errs = c2.CompileParallel(false, compiler.NewLuetCompilationspecs(spec2))
 			Expect(errs).To(BeEmpty())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/upgrade_old_repo", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/upgrade_old_repo"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -704,7 +704,7 @@ urls:
 			err = repo.Write(tmpdir, false)
 			Expect(err).ToNot(HaveOccurred())
 
-			repoupgrade, err := GenerateRepository("test", "description", "disk", []string{tmpdirnewrepo}, 1, tmpdirnewrepo, "../../tests/fixtures/upgrade_new_repo", pkg.NewInMemoryDatabase(false))
+			repoupgrade, err := GenerateRepository("test", "description", "disk", []string{tmpdirnewrepo}, 1, tmpdirnewrepo, []string{"../../tests/fixtures/upgrade_new_repo"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			err = repoupgrade.Write(tmpdirnewrepo, false)
 			Expect(err).ToNot(HaveOccurred())
@@ -818,7 +818,7 @@ urls:
 
 			Expect(errs).To(BeEmpty())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/upgrade", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/upgrade"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -935,7 +935,7 @@ urls:
 
 			Expect(errs).To(BeEmpty())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/upgrade", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/upgrade"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -1037,7 +1037,7 @@ urls:
 
 			Expect(errs).To(BeEmpty())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/upgrade_old_repo", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/upgrade_old_repo"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel("repository.yaml"))).ToNot(BeTrue())
@@ -1123,7 +1123,7 @@ urls:
 
 			Expect(errs).To(BeEmpty())
 
-			repo, err = GenerateRepository("test", "description", "disk", []string{tmpdir2}, 1, tmpdir2, "../../tests/fixtures/upgrade_new_repo", pkg.NewInMemoryDatabase(false))
+			repo, err = GenerateRepository("test", "description", "disk", []string{tmpdir2}, 1, tmpdir2, []string{"../../tests/fixtures/upgrade_new_repo"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			err = repo.Write(tmpdir2, false)
diff --git a/pkg/installer/repository.go b/pkg/installer/repository.go
index 23db11eb..9ecd3460 100644
--- a/pkg/installer/repository.go
+++ b/pkg/installer/repository.go
@@ -176,12 +176,15 @@ func (f *LuetRepositoryFile) GetChecksums() compiler.Checksums {
 	return f.Checksums
 }
 
-func GenerateRepository(name, descr, t string, urls []string, priority int, src, treeDir string, db pkg.PackageDatabase) (Repository, error) {
+func GenerateRepository(name, descr, t string, urls []string, priority int, src string, treesDir []string, db pkg.PackageDatabase) (Repository, error) {
 
 	tr := tree.NewInstallerRecipe(db)
-	err := tr.Load(treeDir)
-	if err != nil {
-		return nil, err
+
+	for _, treeDir := range treesDir {
+		err := tr.Load(treeDir)
+		if err != nil {
+			return nil, err
+		}
 	}
 
 	art, err := buildPackageIndex(src, tr.GetDatabase())
diff --git a/pkg/installer/repository_test.go b/pkg/installer/repository_test.go
index 9d2fa6c5..94ed4650 100644
--- a/pkg/installer/repository_test.go
+++ b/pkg/installer/repository_test.go
@@ -83,7 +83,7 @@ var _ = Describe("Repository", func() {
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.package.tar"))).To(BeTrue())
 			Expect(helpers.Exists(spec.Rel("b-test-1.0.metadata.yaml"))).To(BeTrue())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/buildable", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/buildable"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel(REPOSITORY_SPECFILE))).ToNot(BeTrue())
@@ -165,7 +165,7 @@ var _ = Describe("Repository", func() {
 			Expect(helpers.Exists(spec2.Rel("alpine-seed-1.0.package.tar"))).To(BeTrue())
 			Expect(helpers.Exists(spec2.Rel("alpine-seed-1.0.metadata.yaml"))).To(BeTrue())
 
-			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, "../../tests/fixtures/buildable", pkg.NewInMemoryDatabase(false))
+			repo, err := GenerateRepository("test", "description", "disk", []string{tmpdir}, 1, tmpdir, []string{"../../tests/fixtures/buildable"}, pkg.NewInMemoryDatabase(false))
 			Expect(err).ToNot(HaveOccurred())
 			Expect(repo.GetName()).To(Equal("test"))
 			Expect(helpers.Exists(spec.Rel(REPOSITORY_SPECFILE))).ToNot(BeTrue())