A question from a fellow grower:
Hi does the plant know when to stop growing if it gets close to the light in a grow box for indoors
NO; It will grow into the light fixture. In suggest learning how to train your plants by tying them down. 
A question from a fellow grower:
Hi does the plant know when to stop growing if it gets close to the light in a grow box for indoors
NO; It will grow into the light fixture. In suggest learning how to train your plants by tying them down.