Cedar Grove Plantation is a historic estate located approximately five miles northwest of Edgefield, South Carolina, along U.S. Highway 25. Constructed between 1790 and 1805 by John Blocker Jr., the grandson of Prussian émigré Michael Blocker, the plantation house stands as a remarkable example of Federal-style architecture. ​ Structure: A two-story, white clapboard house featuring a high gable roof.

• Portico: A double-tiered portico adorned with delicate Adamesque details.
• Interior Features:
  • A barrel-vaulted hallway.
  • Elaborately carved mantelpieces.
  • A front parlor retaining early hand-painted French wallpaper, imported before the French Revolution.
• Outbuildings: Includes original kitchen and servant’s quarters. ​ The estate is renowned for its landscape, which includes:

• Tall Cedars: Brought from Prussia, reflecting the family’s heritage.
• English Boxwoods: Some of which were sold during the Great Depression to the Rockefeller family and now reside in the gardens of the Governor’s Palace in Williamsburg, Virginia.
• Rose Garden: Traces of the original rose garden remain, similar to that of the Blocker House.
• Design: The gardens were reputedly laid out by André Michaux, the renowned botanist who also designed the gardens at Middleton Place in Charleston, South Carolina. ​ 1825: Purchased by John Bones.

• 1831: Inherited by John H. Hughes and his wife Martha Bones, who raised eight children there.
• 1973: After the passing of descendant Sallie Mae Nicholson, the property changed hands multiple times, including ownership by Dr. & Mrs. James M. Hawk, Mr. & Mrs. John C. Whitehouse, Dr. & Mrs. Arthur B. Chandler, and Ms. Collins Daye.
• 2024: Owned by Brian Branton, an attorney and lobbyist originally from North Carolina. ​

Cedar Grove was added to the National Register of Historic Places on October 14, 1971, recognizing its architectural and historical significance.