Both tomato seeds started at the same time but one grew in a plain pot (with window light only – that’s the smaller one) while the other was in my Hygro pot with growing lights + window light during the day. Such a difference!

by Hobnobcookie

2 Comments

  1. tentalol

    Temperature plays a more important role than light in determining growth rate. Plants grow much more quickly when it’s warm, and more slowly at lower temperatures.

    Chances are the one that was under the grow lights was at a consistently higher temperature than the one on the window sill.

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