Japanese Water GardenGrow a calming and serene miniature water garden filled with lush tropical plants. Everything needed is included. Just add water! How to grow: set it up, sow the seeds, watch it sprout, and add in the accents. This requires a warm environment: greater than 72 degrees Fahrenheit. Dimensions: Bowl 3. 5 L, 3 H (Approx.) Content: Glass, Volcanic Gravel, Hemianthus Callitrichoides Seeds, Rocks