In this task, find the most appropriate number to replace the blank (indicated with _ ) and express it in words.

Example input: A lion has _ legs.
Example output: four
Example explanation: The most logical numeric answer in words is four.
Q: Black cherry can remain dormant for _ or more years.
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
three