Question: What is the laid down date of the flower-class ship whose builder built over 500 ships in a period of just over 100 years ?

text: Flower-class corvette
Ships -- Flower-class ( modified )

The Flower-class corvette (also referred to as the Gladiolus class after the lead ship) was a British class of 294 corvettes used during World War II, specifically with the Allied navies as anti-submarine convoy escorts during the Battle of the Atlantic. Royal Navy ships of this class were named after flowers, hence the name of the class. The majority served during World War II with the Royal Navy (RN) and Royal Canadian Navy (RCN). Several ships built largely in Canada were transferred from the RN to the United States Navy (USN) under the lend-lease programme, seeing service in both navies. Some corvettes transferred to the USN were manned by the US Coast Guard. The vessels serving with the US Navy were known as Temptress and Action-class patrol gunboats. Other Flower-class corvettes served with the Free French Naval Forces, the Royal Netherlands Navy, the Royal Norwegian Navy, the Royal Indian Navy, the Royal Hellenic Navy, the Royal New Zealand Navy, the Royal Yugoslav Navy, and, immediately post-war, the South African Navy. After World War II many surplus Flower-class vessels saw worldwide use in other navies, as well as civilian use. HMCS Sackville is the only member of the class to be preserved as a museum ship.
Ship Builder Laid down Launched Fate
Arabis George Brown & Co. , Greenock 26 February 1943 28 October 1943 Transferred on 16 March 1944 to the Royal New Zealand Navy as HMNZS Arabis . Returned to RN in 1948 . Scrapped in August 1951 at Grays
Arbutus George Brown & Co. , Greenock 3 May 1943 26 January 1944 Second ship of this type to bear the name . For history of the first see below under ships lost in action . This ship transferred on 5 July 1944 to the Royal New Zealand Navy as Arbutus . Returned to RN in 1948 . Scrapped in June 1951 at Dunston
Betony Alexander Hall & Co. , Aberdeen 26 September 1942 22 April 1943 Transferred on 24 August 1945 to India as Sind . Returned to RN on 17 May 1946 . Transferred in 1947 to Thailand as Prasae . Grounded on 7 January 1951 along east coast of Korea and scuttled on 13 January 1951
Buddleia Alexander Hall & Co. , Aberdeen 30 November 1942 19 June 1943 Transferred on 10 November 1943 to RCN as Giffard
Bugloss John Crown & Sons Ltd. , Sunderland 26 November 1942 21 June 1943 Transferred on 19 February 1945 to Indian Navy as Assam . Returned to RN in 1947 and scrapped
Bullrush John Crown & Sons Ltd. , Sunderland 22 February 1943 11 October 1943 Transferred on 8 February 1944 to RCN as Mimico
Burnet Ferguson Bros. ( Port Glasgow ) Ltd. , Port Glasgow 2 November 1942 31 May 1943 Transferred on 15 May 1945 to India as HMIS Gondwana . Returned to RN on 17 May 1946 . Transferred on 15 May 1947 to Thailand
Candytuft A . & J. Inglis Ltd. , Glasgow 27 February 1943 28 September 1943 Transferred on 5 January 1944 to RCN as HMCS Long Branch
Ceanothos Ferguson Bros. ( Port Glasgow ) Ltd. , Port Glasgow 5 February 1943 30 August 1943 Transferred on 1 December 1943 to RCN as HMCS Forrest Hill
Charlock Ferguson Bros. ( Port Glasgow ) Ltd. , Port Glasgow 6 April 1943 16 November 1943 Transferred in 1946 to India as HMIS Mahratta . 1947 total loss
Comfrey Collingwood Shipyards Ltd. , Collingwood , Ontario 6 January 1942 28 July 1942 Transferred on 22 November 1942 to USN as USS Action
Cornel Collingwood Shipyards Ltd. , Collingwood , Ontario 6 January 1942 4 September 1942 Transferred on 10 December 1942 to USN as USS Alacrity
Dittany Collingwood Shipyards Ltd. , Collingwood , Ontario  31 October 1942 Formerly USS Beacon . Transferred to RN on 31 May 1943 under the lend-lease program . Returned to USN on 20 June 1946
Flax Kingston Shipbuilding Co. Ltd. , Kingston , Ontario  15 June 1942 Transferred on 6 December 1942 to USN as USS Brisk
Honesty Kingston Shipbuilding Co. Ltd. , Kingston , Ontario  28 September 1942 Formerly USS Caprice . Transferred to RN under the lend-lease program . Returned to USN on 5 January 1946
Linaria Midland Shipyards Ltd. , Midland , Ontario  18 November 1942 Formerly USS Clash . Transferred to RN under the lend-lease program . Returned to USN on 27 July 1946
Mandrake Morton Engineering & Dry Dock Co. , Quebec City November 1941 22 August 1942 Transferred on 6 April 1943 to USN as USS Haste
Milfoil Morton Engineering & Dry Dock Co. , Quebec City November 1941 5 August 1942 Transferred on 31 March 1943 to USN as USS Intensity
Musk Morton Engineering & Dry Dock Co. , Quebec City 28 November 1941 15 July 1942 Transferred on 22 December 1942 to USN as USS Might