How long would it take for a red bean to grow 15 cm?

Question

Well, i'm doing a science fair project on the growth of red bean plants, how long would it take for a red bean plant to grow to 15 cm, including the roots, in a plastic baggie and wet towel? I'll put it near a window for sunlight.

Answer 1

The growing period is 65-100 day for a 13-15cm in length.

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