01 / Kakitsubata
Once common on the Mikawa plain, a national record says,a kakitsubata colony remains in the pond.
The kakitsubata (rabbitear iris) colony at Kozutsumi Nishiike pond was designated a National Natural Monument in 1938. The description written at designation says a colony once common on the Mikawa plain survives in small part. The pond was first an irrigation pond for rice fields, and in 1976 volunteers founded a society to protect the irises.
- National Natural Monument, 1938
- Peak bloom in mid-May
- Protection society founded 1976

