diff --git a/packages/block-library/src/index.js b/packages/block-library/src/index.js
index c962c8172dec6..870b0cc665625 100644
--- a/packages/block-library/src/index.js
+++ b/packages/block-library/src/index.js
@@ -174,7 +174,9 @@ export const registerCoreBlocks = () => {
 /**
  * Function to register experimental core blocks depending on editor settings.
  *
- * @param {Object} settings Editor settings.
+ * @param {Object} settings           Editor settings.
+ * @param {Object} [context]          Post context.
+ * @param {string} [context.postType] Post Type
  *
  * @example
  * ```js
@@ -185,7 +187,7 @@ export const registerCoreBlocks = () => {
  */
 export const __experimentalRegisterExperimentalCoreBlocks =
 	process.env.GUTENBERG_PHASE === 2
-		? ( settings ) => {
+		? ( settings, { postType } = {} ) => {
 				const {
 					__experimentalEnableLegacyWidgetBlock,
 					__experimentalEnableFullSiteEditing,
@@ -208,7 +210,16 @@ export const __experimentalRegisterExperimentalCoreBlocks =
 								queryLoop,
 								queryPagination,
 								postTitle,
-								postContent,
+								/*
+								 * Only provide the Post Content block when editing templates or,
+								 * template parts so there's no risk of posts including themselves
+								 * through a Post Content block (leading to infinite recursion).
+								 */
+								[ 'wp_template', 'wp_template_part' ].includes(
+									postType
+								)
+									? postContent
+									: null,
 								postAuthor,
 								postComments,
 								postCommentsCount,
@@ -217,7 +228,7 @@ export const __experimentalRegisterExperimentalCoreBlocks =
 								postExcerpt,
 								postFeaturedImage,
 								postTags,
-						  ]
+						  ].filter( Boolean )
 						: [] ),
 				].forEach( registerBlock );
 		  }
diff --git a/packages/edit-post/src/index.js b/packages/edit-post/src/index.js
index 2bd1cc75e0751..59d013e7ebe43 100644
--- a/packages/edit-post/src/index.js
+++ b/packages/edit-post/src/index.js
@@ -96,7 +96,7 @@ export function initializeEditor(
 	);
 	registerCoreBlocks();
 	if ( process.env.GUTENBERG_PHASE === 2 ) {
-		__experimentalRegisterExperimentalCoreBlocks( settings );
+		__experimentalRegisterExperimentalCoreBlocks( settings, { postType } );
 	}
 
 	// Show a console log warning if the browser is not in Standards rendering mode.
diff --git a/packages/edit-site/src/index.js b/packages/edit-site/src/index.js
index 08a0e3993f0e9..10cccc717e66d 100644
--- a/packages/edit-site/src/index.js
+++ b/packages/edit-site/src/index.js
@@ -58,7 +58,9 @@ export function initialize( id, settings ) {
 
 	registerCoreBlocks();
 	if ( process.env.GUTENBERG_PHASE === 2 ) {
-		__experimentalRegisterExperimentalCoreBlocks( settings );
+		__experimentalRegisterExperimentalCoreBlocks( settings, {
+			postType: 'wp_template',
+		} );
 	}
 
 	render( <Editor />, document.getElementById( id ) );
diff --git a/test/integration/full-content/full-content.test.js b/test/integration/full-content/full-content.test.js
index 008239bd612b6..040001690a82d 100644
--- a/test/integration/full-content/full-content.test.js
+++ b/test/integration/full-content/full-content.test.js
@@ -73,7 +73,15 @@ describe( 'full post content fixture', () => {
 		require( '../../../packages/editor/src/hooks' );
 		registerCoreBlocks();
 		if ( process.env.GUTENBERG_PHASE === 2 ) {
-			__experimentalRegisterExperimentalCoreBlocks( settings );
+			/**
+			 * We're loading these blocks with a `wp_template` post context,
+			 * since most of them are meant to be used in Site Editor templates,
+			 * to the point that e.g. the Post Content block is unavailable in
+			 * a Post Editor (`post`) context.
+			 */
+			__experimentalRegisterExperimentalCoreBlocks( settings, {
+				postType: 'wp_template',
+			} );
 		}
 	} );