See subject. Spinoff from thread on back-yard giant Sequoias. I don’t think Jack’s was detailed as to species.
1] I’m thinking not necessarily how tall is the tallest in the record books–are there record books for such things?–or how tall do the crops run usually. But under special growth conditions, there must be structural, mechanical limits.
2] Recall query: do botanists, agronomists, or whoever keep such record books?
Per various cites, the world’s tallest bean plant was one grown by Staton Rorie (USA) in 2003. It was 46 feet 3 inches (14.1m) tall.
Extra question was that height actually standing upright or was it the total length of the stalk regardless of its elevation?
Botanist and such don’t normally keep records of the “largest” or “smallest” except informally. (“I once found a 5 lb. apple.” Oh yeah? I once found a 5.5 lb. apple!")
The “world’s largest pumpkin” is verified by a pumpkin grower’s association in contests.
The world’s largest cow was measured by local authorities, but given the title by the Guiness Book of World Records.
Since there are many vegetables and growers all over the world there are many contests and record keepers: I particularly am amused by leeks, Here is a picture, I hope. Geoff is presented with a certificate for his world record by competition chief David Clough
I once paid $6 for three seed from a six foot carrot. Two did not germinate and a cat decided to dig up the third creating a place to shit.
Even without a record-breaking carrot you can still make a very tasty fricassee out of a cat. A particular cat. 