The Chrysanthemum, or Kiku in Japanese, is a perennial flower of the family Asteraceae.
Chrysanthemums have been loved by the Japanese people from times past for their beautiful
appearance and fragrance, and are cultivated in a number of locations in Koshigaya City.
The Chrysanthemum was chosen as the result of public submissions, and was designated as
the official flower of Koshigaya City on November 3, 1978, to mark the 20th anniversary of the
city's formation.

The Zelkova, or Keyaki in Japanese, is a deciduous tree of the family Ulmaceae.
Zelkova trees thrive in the natural conditions of the Musashino Area (the central and western
parts of the Tokyo Metropolitan Area and the southern part of Saitama Prefecture), and since times
past have been considered characteristic of the area's scenery. Again, there are many zelkova trees
growing in Koshigaya City, and with its trunk standing straight and tall and widely spreading branches,
the Zelkova is a fitting symbol of the continuously developing city that is Koshigaya.
The Zelkova was designated as the official tree of Koshigaya City on November 3, 1978, to mark the
20th anniversary of the city's formation.

The Collared Turtle Dove, or Shirakobato in Japanese, is a bird of the family Columbidae, under
the order Columbiformes.
The Collared Turtle Dove is brown in colour, has a characteristic black ring around its neck, and
is a rare bird found only in Koshigaya City and the surrounding areas. Again, the Collared Turtle Dove
has been designated as a national natural treasure, and as well as being chosen as a symbol for
Koshigaya City, has been chosen as a symbol for environmental protection.
The Collared Turtle Dove was designated as the official bird of Koshigaya City on November 3,
1988, to mark the 30th anniversary of the city's formation.