Growing seed / plant in only fresh water without draining questiontia sal2

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Greetings All

I'm doing a little experiment with growing plants and the effects vary
magnetic fields on them.
I would like to grow plants in a test tube and measure there growth.
What types of seeds would be the best to use that's fast growing and
will grow in water. I know I could use bean sprouts but I have to
drain the water after awhile. Is their a seed / plant that I can
leave in water and watch it grow in water alone? And if so where can
I find these seeds.

aloha
Rick

[greggausttin]

Seed sowing is the first step towards gardening. Gardening is a beautiful habit and hobby to follow as it gives content to the heart and peace to the mind. Even I have a small garden in my backyard but it is a pond garden.