The Crafty Collaborative and Better Homes and Gardens House and Hold teamed up to provide a pair of "reviews" of terrarium-crafting. Both participants created the typical succulent-in-potting-soil-in-a-jar type terrarium - which is great for an afternoon craft but may not last in the long run. One woman made a wise comment:
"Be careful what you stick in there… initially I had these little mushrooms from the craft store and within a couple of days they were totally furry with mold. Gross."She doesn't describe in detail what these craft store mushrooms were made of but I'm picturing those foam-looking mock mushrooms you see in the floral arrangement sections of craft stores. Beware adding spongy decorative items as the moist terrarium environment is prone to encouraging mold growth on plants and nearly anything else. When considering adding curios to your terrariums, think of hardier items that could handle semi-outdoor conditions like glass, plastic, clay or stone.