"Place half of the rocks (included) in the bottom of the terrarium to act as a drainage layer. In a separate bowl, dissolve growing medium pellet in 3/4 cup of water, fluff with fork, and place into terrarium. Sow cactus seeds by gently pressing them into the surface of the growing medium and lightly cover with a thin layer of growing medium. Cover terrarium with plastic wrap. Place in a warm, bright location and keep growing medium moist but not overwatered; use a spray bottle to mist as necessary. Remove plastic wrap once seeds germinate (1-3 months). Water by misting when the top 1/2"" of soil becomes dry. Once seedlings develop tiny spines, begin watering with balanced plant fertilizer mixed at half-strength (feed only a few times per growing season). Cacti grow very slowly and will not need transplanting for 3-5 years.
Save the second half of the rocks to personalize your cactus terrarium! After your seeds have germinated, place rocks around the plants to add your own special decorative touch.

Tip: Cacti germination is enhanced when temperatures are kept warm, between 70° and 80°F."