Once Fittonia has matured, the spreading foliage is terrific for hanging baskets. Getting that spread though is difficult because humidity trays are out the question for hanging baskets. Humidifiers can help address the low humidity issue, however, the simplest solution to hanging baskets would be to group similar trailing plants together. The heartleaf philodendron, parlor palm, English ivy and ferns are each trailing varieties that can tolerate lower humidity. Group them together to take advantage of the collective transpiration and they can help prevent leaves curling on nerve plants.