Be sure not use too many seeds all at one time, crowding them may prevent growth. In most cases, your garden will begin to sprout in 3-4 days. For best results, keep your terrarium or garden in a warm sunny place. If your seeds are not sprouting, check to be sure the soil is damp, misting as needed.
Note: If your garden gets too wet or humid, you may notice some new fuzzy growth appear. These are little plants called mold. Remove the lid and let your garden dry a bit - air circulation helps. The mold is nature's way of breaking down the seeds and plant material to create new soil.
Over time your garden will need to be replanted. Your kit comes with enough materials to plant your garden twice.