That depends upon the species.
There are records of tropical pitcher plants (nepenthes) that have grown over sixty feet tall on their vine, however, this is quite rare.
The largest and tallest sundew (drosera) was a d. erythrogyne that grew seven feet tall, had over a thousand leaves and seven hundred flowers.
Some larger sarracenia (north American pitcher plants) can grow four foot tall traps, which make these the largest plant traps in the world. Examples include the endangered S. Oreophila and the common S. Alata.
The discoverers were multiple. I can only give the data recorded.
A yucca plant can grow up to 30 feet tall.
A spinach plant can typically grow to be about 6-12 inches tall.
A mass cane plant can grow up to 6 to 10 feet tall.
The potatoe plant will grow to about two feet tall, the part we eat, the 'spuds' grow underground.
The hibiscus plant is a shrub that can grow up to fifteen feet tall.
A corn plant typically grows to be about 7 to 10 feet tall.
A jade plant typically grows to be about 3 feet tall.
This tall plant is called the papayrus, discovered by the egyptians. From papyrus we get the word paper.
A corn plant typically grows to be about 7 to 10 feet tall.
A mint plant typically grows to be about 12 to 24 inches tall.
A jade plant can grow up to 3 feet tall and wide when fully mature.
A Dracaena plant typically grows to be around 3 to 10 feet tall.