The Arboretum on the Farm cannot be a parking lot.

 The Arboretum Woods are protected by federal, provincial and City of Ottawa laws:

 Federal:

• The Experimental Farm is a National Historic Site of Canada (1998)
•  National Interest Land Mass (1988);
•  the Farm is part of a 900 square mile memorial dedicated to fallen Canadian soldiers. The Greber Report of 1950, page 15 of 395 pages.
• A 1954 Privy Council Order-in-Council signed by Prime Minister of Canada Louis St-Laurent confirmed that 1.) This property will be owned by the citizens of Canada in perpetuity 2.) Much of the land will remain an open space.

Senate Bill S-203, An Act to Amend the National Capital Act, plans to create buffer zones around national historic sites including the Parliamentary Precinct in Ottawa; scenic parkways; the Greenbelt; Gatineau Park, etc. A buffer zone would prevent the City of Ottawa from clearcutting hundreds of trees to widen Prince of Wales Drive. And destroying the Arboretum.

The City of Ottawa wanted to preserve the Woods in 2006: (Google: "urban natural features strategy City of Ottawa, April 11, 2006." Or you can see my blog "Protected land and waterways in the National Capital.")  

Central Experimental Farm National Historic Site Management Plan, Part 7 of 20. September 17 2019,

• properties east of Prince of Wales are Capital Urban Green Space.
• The Agricultural Museum is a National Cultural Institution.
• Research fields are Rural Lands.
• Rideau Canal and nearby CEF shore lands are Waterway and Shore land.
• Prince of Wales north of the traffic circle and NCC Driveway are Capital Parkway.
• Prince of Wales south of the traffic circle is Scenic Entry.
• lands near Carling are Federal Node.
• recreational pathways are part of the Capital Pathway Network.
• experimental fields and most of the property west of Prince of Wales are Agricultural Research.
• remaining land west of Prince of Wales are General Urban Area and Urban Natural Features.

Directory of Federal Real Property-The Arboretum

• Property Number: 02900
• Custodian: National Capital Commission
• Interest: Crown Owned
• Restriction: No Restriction
• Primary Use: Parks and Recreation
• Address: Prince of Wales Drive
• Municipality: Ottawa
• Province/Territory: Ontario
• Federal Electoral District: Ottawa Centre
• Census Classification: Rural
• Land Area: 2.8692 ha or 7.0 acres
• Building Count: 0   
• Record Created On: July 30, 1998 
• Record Last Modified On: September 25th, 2017

  

  Until recently the property covered 64 acres. Not 7.
  .

  "The Dominion Arboretum at the Central Experimental Farm" by Gardens Ottawa in the year 2022.
  "Located on 64-acres of rolling land between Prince of Wales Drive and the historical Rideau Canal system, the Arboretum was developed to test the hardiness of woody plants in the Canadian climate. With a variety of micro-climates and showcasing a range of woody plants, the collection contains around 4,000 specimens. The  Dominion Arboretum displays a wide range of well-established trees and shrubs, some dating back to 1889. Trees and Shrub specimens: 
• A few different Crab Apple Tree areas, mostly along Prince of Wales Drive.
• A Magnolia Grove
• Lots of Weeping Willows
• One of the most beautiful specimens of Bebb's Oak, a significant tree of over 100 years old."

The Arboretum. The photo is from Gardens Ottawa.

The Agriculture Canada property in Ottawa encompassed 1,045 acres in 1992.