diff --git a/integration-tests/environment_delete_test.go b/integration-tests/environment_delete_test.go
new file mode 100644
index 00000000..a6530106
--- /dev/null
+++ b/integration-tests/environment_delete_test.go
@@ -0,0 +1,91 @@
+package tests
+
+import (
+	"net/http/httptest"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/upsun/cli/pkg/mockapi"
+)
+
+func TestEnvironmentDelete(t *testing.T) {
+	authServer := mockapi.NewAuthServer(t)
+	defer authServer.Close()
+
+	apiHandler := mockapi.NewHandler(t)
+	apiServer := httptest.NewServer(apiHandler)
+	defer apiServer.Close()
+
+	projectID := mockapi.ProjectID()
+	apiHandler.SetProjects([]*mockapi.Project{{
+		ID: projectID,
+		Links: mockapi.MakeHALLinks(
+			"self=/projects/"+projectID,
+			"environments=/projects/"+projectID+"/environments",
+		),
+		DefaultBranch: "main",
+	}})
+	apiHandler.SetEnvironments([]*mockapi.Environment{
+		makeEnv(projectID, "main", "production", "active", nil),
+		makeEnv(projectID, "test-1", "development", "active", "main"),
+		makeEnv(projectID, "test-2", "development", "active", "main"),
+		makeEnv(projectID, "dev", "development", "active", "main"),
+	})
+
+	f := newCommandFactory(t, apiServer.URL, authServer.URL)
+	f.Run("cc")
+
+	cases := []struct {
+		name        string
+		args        []string
+		extraEnv    []string
+		wantErr     bool
+		wantStdErr  []string
+		wantMissing []string
+	}{
+		{
+			name:        "single wildcard argument",
+			args:        []string{"test-*"},
+			wantStdErr:  []string{"2 environments found by ID.", "Selected environments: test-1, test-2"},
+			wantMissing: []string{"Specified environment not found"},
+		},
+		{
+			name:        "wildcard option",
+			args:        []string{"-e", "test-*"},
+			wantStdErr:  []string{"2 environments found by ID.", "Selected environments: test-1, test-2"},
+			wantMissing: []string{"Specified environment not found"},
+		},
+		{
+			name:        "ignores an unknown branch variable",
+			args:        []string{"--type", "development"},
+			extraEnv:    []string{"PLATFORM_BRANCH=missing"},
+			wantStdErr:  []string{"3 environments found matching type(s): development"},
+			wantMissing: []string{"Specified environment not found"},
+		},
+		{
+			name:        "missing environment",
+			args:        []string{"missing"},
+			wantErr:     true,
+			wantStdErr:  []string{"Environment not found: missing", "0 environments found by ID."},
+			wantMissing: []string{"Specified environment not found"},
+		},
+	}
+	for _, c := range cases {
+		t.Run(c.name, func(t *testing.T) {
+			f.extraEnv = c.extraEnv
+			args := append([]string{"environment:delete", "-p", projectID}, c.args...)
+			// Decline any confirmation, so nothing is deleted.
+			_, stdErr, err := f.RunInteractive("n\nn\n", args...)
+			if c.wantErr {
+				assert.Error(t, err)
+			}
+			for _, s := range c.wantStdErr {
+				assert.Contains(t, stdErr, s)
+			}
+			for _, s := range c.wantMissing {
+				assert.NotContains(t, stdErr, s)
+			}
+		})
+	}
+}
diff --git a/legacy/src/Command/Environment/EnvironmentDeleteCommand.php b/legacy/src/Command/Environment/EnvironmentDeleteCommand.php
index d78aabde..76e168d8 100644
--- a/legacy/src/Command/Environment/EnvironmentDeleteCommand.php
+++ b/legacy/src/Command/Environment/EnvironmentDeleteCommand.php
@@ -77,12 +77,8 @@ protected function configure(): void
 
     protected function execute(InputInterface $input, OutputInterface $output): int
     {
-        // Select the current project, deliberately ignoring the 'environment'
-        // argument and option, as those will be processed separately.
-        $inputCopy = clone $input;
-        $inputCopy->setArgument('environment', null);
-        $inputCopy->setOption('environment', null);
-        $selection = $this->selector->getSelection($input, new SelectorConfig(envRequired: false));
+        // Select only the project: the 'environment' argument and option are processed separately.
+        $selection = $this->selector->getSelection($input, new SelectorConfig(selectEnv: false));
 
         $environments = $this->api->getEnvironments($selection->getProject());
 
@@ -103,7 +99,9 @@ protected function execute(InputInterface $input, OutputInterface $output): int
         if ($specifiedEnvironmentIds) {
             $anythingSpecified = true;
             $allIds = \array_map(fn(Environment $e) => $e->id, $environments);
-            $specifiedEnvironmentIds = Wildcard::select($allIds, $specifiedEnvironmentIds);
+            // Keep exact IDs even if they don't match, so they can be reported as not found.
+            $exactIds = array_filter($specifiedEnvironmentIds, fn(string $id): bool => !str_contains($id, '%') && !str_contains($id, '*'));
+            $specifiedEnvironmentIds = array_values(array_unique(array_merge(Wildcard::select($allIds, $specifiedEnvironmentIds), $exactIds)));
             $notFound = array_diff($specifiedEnvironmentIds, array_keys($environments));
             if (!empty($notFound)) {
                 // Refresh the environments list if any environment is not found.
diff --git a/legacy/src/Selector/Selector.php b/legacy/src/Selector/Selector.php
index 76179a63..9950fe27 100644
--- a/legacy/src/Selector/Selector.php
+++ b/legacy/src/Selector/Selector.php
@@ -144,7 +144,9 @@ public function getSelection(InputInterface $input, ?SelectorConfig $config = nu
         $environment = null;
 
         $envArgName = $config->envArgName;
-        if ($input->hasArgument($envArgName)
+        if (!$config->selectEnv) {
+            $this->debug('Skipping environment selection');
+        } elseif ($input->hasArgument($envArgName)
             && $input->getArgument($envArgName) !== null
             && $input->getArgument($envArgName) !== []) {
             if ($input->hasOption($envOptionName) && Option::stringOrNull($input, $envOptionName)) {
diff --git a/legacy/src/Selector/SelectorConfig.php b/legacy/src/Selector/SelectorConfig.php
index 378aebe1..80373739 100644
--- a/legacy/src/Selector/SelectorConfig.php
+++ b/legacy/src/Selector/SelectorConfig.php
@@ -10,6 +10,8 @@ class SelectorConfig
 {
     public function __construct(
         public bool $envRequired = true,
+        // Set to false to select only the project, e.g. when the command handles environments itself.
+        public bool $selectEnv = true,
         public string $envArgName = 'environment',
         public string $chooseProjectText = 'Enter a number to choose a project:',
         public string $chooseEnvText = 'Enter a number to choose an environment:',