When To Harvest Hen Of The Woods. How to grow hen of the woods indoors. In about 6 months to one year, your first hen of the woods mushrooms should begin to grow.
You can harvest them by cutting them off at the base when they are at least 4 inches in diameter. How to grow hen of the woods indoors. Hen of the woods mushrooms can also be grown with some success inside, as you can see in the video below.