March 2025


Koji Ninomiya (Japan) in collaboration with Semken Landscaping.


Melbourne International Flower & Garden Show 2008 ‘Best In Show’ winning garden by Koji Ninomiya

In 1995, Koji Ninomiya won the first Japanese gold medal at the Chelsea Flower Show .

Later, he participated in flower shows around the world, and for the first time in the world, won a gold medal at the world’s three major flower shows. He has also served as an international judge for the Hampton Court Palace Flower Show (UK), the Ellerslie Flower Show (New Zealand), the Singapore Garden Festival and the Singapore Garden Festival .

He is the Chairman of the 7th Annual Meeting of the Arboretum, first-class landscaping construction management engineer, part-time lecturer at the Gifu Prefectural International Horticultural Academy.

Semken Landscaping first worked alongside Koji in 2003 at the Chelsea Flower Show for Julian Dowle. In 2004 Semken Landscaping worked again with Koji at Chelsea and, in 2005 were fortunate enough to be part of an international team that constructed The Chelsea Pensioner Garden winning a Gold Medal, Best in Show and the Peoples Choice Award.

Semken landscaping was happy to team up with Koji in 2008 at the Melbourne International Flower and Garden Show to create the fabulous Sei Sei Tei which won a Gold Medal and the prestigious City of Melbourne Best in Show.

Koji is a wealth of horticultural knowledge and his garden show experience is somewhat unmatched internationally. Semken Landscaping have been lucky to have had many of Kojis student come and work with us in Australia.

To work again with Koji and his team from Japan on Sei Sei Tei Ni is a great honour.


If you make your heart clean, you will be released from what disturbs your heart.

If you face nature, silence will come to your soul.

Sei Sei Tei 2nd

When you face this garden, no doubt you will feel the nature surrounding you.

In the past, glossy flowers were not used very often in Japanese gardens. It is because beautiful flowers make the viewers excited (excite the mind of viewers) and the silence of the heart draws apart (leave a silence in the soul).

Current Japanese gardens are heavily influenced by Western gardens.

Here, I have created a one-of-a-kind garden that is a fusion of traditional Japanese garden and Western garden.

I believe this Sei Sei Tei 2nd will be accepted by many people as a modern garden.

See Koji Ninomiya, as well as several other Best In Show designers all coming together for the 25th Anniversary of the Melbourne International Flower & Garden Show


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