A terrarium is an easy way to add some green to your home, even if you’re lacking a green thumb. DIY your own with these step-by-step instructions from the new book, The House Gardener.
Step 1

Put a layer of clay gravel, about 1 1⁄4 in (3 cm) deep, at the bottom of the terrarium. Add a layer of charcoal, approximately 1⁄2–3⁄4 in (1–2 cm) deep, on top of the clay gravel.

Read more: https://www.goodhousekeeping.com/home/gardening/advice/g74/how-to-make-a-terrarium/?slide=2