Read our beginner's guide for more information on how to take care of your terrarium. If you have purchased a terrarium or terrarium kit, care instructions should have been provided. General Care: 1) Keep in an area with bright yet indirect light 2) Mist gently with distilled water only if moss/soil is drying 3) If overwatered, leave the lid off for 1-2 days. 4) If overgrown, carefully prune the plants just above the last node. Repropagate your cuttings. 5) Keep away from areas of extreme temperature.