terrariums care pricing faq contact order for sale care instructions place your terrarium within 10 feet of a window without exposing it to more than 1 hour of direct sunlight a day. be careful of placing directly in south facing windows. in offices, fluorescent lighting should provide the proper color range for good plant growth, but can be supplemented with a desk lamp if necessary. the key is to watch your terrarium closely until you understand it’s drying pattern. Feel the soil about an inch or so near a plant, if the soil is damp, it isn’t time to water yet. too much watering can be worse for the plants than too little. 1 cactus + succulents check often to see if plant is showing signs of stress i.e. changing colors, shriveling, changing shape... water 3-4 drops per plant once a month. every 6 months, fertilize with 1/2 strength liquid fertilizer for cactus and succulents 2 craspedia also known as a billy ball. do not get this wet! otherwise, this needs no care. 3 hand-made sand support wall 4 preserved moss does not need water or care. 5 tillandsias / air plants once every 2 weeks remove tillandsia from terrarium, immerse the whole plant in tepid water, let the plant dry out for an hour before placing tillandsia back inside the terrarium. tillandsias need to dry out completely between waterings. in extremely dry conditions, or in the house or office with air conditioning or heating going, your plant may require more water. if your plant looks dry (check in the leaf sheaths, and the base of the plant) you could water more often as needed, as long as the plant dries out before being watered again