In article , Me
wrote:

For a science experiment I am doing with a child, I am looking for a seed
that once planted will sprout and grow quickly such that height measurements
can be taken. The time frame that I am looking at is 7-9 days. Does
anybody know of a suitable seed that we can use? You help is much
appreciated.

Kidney beans, mung beans, radishes, sweet peas...

Just off the top of my head.

--
The moral difference between a soldier and a civilian is that the soldier
accepts personal responsibility for the safety of the body politic of which he
is a member. The civilian does not. ‹ Robert A. Heinlein