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Discover new things by revisiting the old!
(温故知新)

Higo Hanasyoubu (Higo Iris)
❁Mangetsukai's Rule of Secrets❁
- To protect the firm promise of Matsudaira Shoo and Yoshida Junnosuke and the pure varieties
All seedlings and seeds are owned by Mangetsu-kai, and are prohibited from being transferred or shared with anyone other than members, even close relatives, and must be returned when leaving the group!
In the 1910s, a professor emeritus from Tokyo University investigated Higo irises and reported at the International Botanical Society that they were "unparalleled flowers, not only in Japan, but also in the world."
They became widely known in the horticultural world around the world.
They were encouraged to exhibit them at the 1929 Paris World's Fair as "a flower that Japan can be proud of," but they declined due to the fact that they were not to be sold to outsiders.
In 1930, the American Iris Society asked them to sell seedlings, but they refused, in accordance with the society's rules.
The Higo Hanasyobu (Higo Iris) Mangetsu-kai has protected and passed on the "not to be sold to outsiders" rule!
Shohinken is the only plant allowed by the Mangetsu-kai to be planted in the ground.
Currently, the pure variety is being protected and passed down by several members.
The flowers generally sold commercially as "Higo irises" are not from the Mangetsu-kai.
What are the characteristics of Higo Iris?

Late May to mid-June flowering in Kumamoto‼
What are the characteristics of Higo Iris?
* How is it different from other irises?
Large flowers and large, erect flower centers
3 to 6 perianths are large and wide
The center of the flower is erect and the flower shape is beautiful
* What is the color of the flowers? 60% are white
Pure colors such as white, navy, purple, red, etc.
Various colors such as solid colors, stripes, borders, and stripes
* How many varieties are there?
According to the Mangetsu-Kai Flower Records (2015), a total of 1,296 varieties.
Appreciation of Higo Iris
In principle, they are grown in pots and lined up on a tatami mat to enjoy!
1. Standing → Focus on the flower center from diagonally above
2. Sit at a distance → Admire the shape, color, leaves, pot, and overall appearance of the flower
The life of a flower lasts for 3 days! Three ways to enjoy it!
Day 1: Blooming Day 2: The flower grows Day 3: Full bloom


Where to see the irises in the garden!
Shohinken Approximately 5,000 Higo irises are planted! (Yatsushiro City, Kumamoto)
Kumamoto City Zoological and Botanical Gardens
Suizenji Jojuen Garden
Higo Hosokawa Garden (Tokyo)
Exhibition of potted plants (2023)
Kumamoto Castle: Josaien/Ninomaru Rest Area
Mornings from early to mid-June
*Dates may vary depending on the growing conditions.
History of Higo Iris
The founder of Higo Iris: Yoshida Junnosuke (1786-1870)
In the 1830s, at the request of Hosokawa Narimori, the lord of the Kumamoto domain, Yoshida Junnosuke, a retainer of the domain, learned the secrets of cultivation from Matsudaira Sakingo (Shoo), a samurai in Edo, and received seedlings, seeds, and the "Iris Cultivation Record"
→ Promised to "keep secret"!
Cultivation began in Kumamoto by a dozen Hosokawa retainers
(1826-1860) "Hanaren" 16th day meeting: Meeting on the 16th of every month
Even if the meeting lasted until late at night, the light of the full moon meant no need for lanterns on the way home
Various techniques for breeding and propagation progressed
1886 "Mangetsu-sha" was formed
They focused on cultivation and actively created new flowers
In 1893, they changed their name to "Kumamoto Iris Mangetsu-kai" and continue to this day
Reference : Kumamoto City Green Meisters Team Ladybug
Kumamoto Castle (Official) photo gallary
Higo Bank , Higo Rokka web site.
Association News Letter Vol. 27 by The Japan Iris Society
