Provide a water dish. Be sure to only put one spider in each terrarium. Maintain a fairly humid climate by dampening the soil and watering the plants. Clean the glass, both inside and out, with water. Dead crickets should be discarded.
Tarantulas are predators and eat other invertebrates.
Feed your rosehair tarantula about 4 crickets per week. Crickets can be purchased from pet stores. The feeding schedule you establish depends on your own schedule. Just be sure that there is always a live cricket in the cage. Avoid having more than two crickets in the terrarium as this may stress the tarantula.