Summer brings mosquitoes, fleas and warm days with heat shimmers that make the air wiggle in the distance. After a hot day, people sit outside to enjoy evening's coolness. In the old Japanese calendar, the Fifth Month came in the middle of summer, so "Fifth Month rain" was another summer season word for Issa. Peonies and lotuses bloomed, and the Japanese cuckoo (hototogisu) sang in the trees.
Search for haiku that contain these key words: heat shimmer, mosquito, flea, cool, Fifth Month rain (be sure to capitalize "Fifth" and "Month"), cuckoo, peony and lotus.