February 1890: Founded as the "Limited Liability Yokohama Ueki Shokai" at the present location with Uhei Suzuki as the representative. We became the first Japanese trading company to import and export plants, which was the predecessor of our current company. Opened a branch office in San Francisco, USA.

June 1891: Established as the "Yokohama Nursery Shokai Co., Ltd." with the capital of 50,000 Japanese Yen.

October 1893: Changed our trading name to "Yokohama Nursery Co., Ltd." and completed company registration. Exhibited bonsai and Japanese-style gardens at the Columbus World's Fair in Chicago, which was very well received.

1897: Opened an iris garden in Isogo, Byobugaura, Kuraki, Kanagawa, to cultivate and improve the quality of irises for export.

December 1898: Opened a New York office.

March 1903: Due to the expansion of overseas sales channels, we opened an iris garden in Kamata, Ebara, Tokyo.

February 1907: Opened a London branch. Published a list of prices for the first time and sold flower seeds in packets in Japan.

May 1910: Exhibited bonsai and a Japanese-style garden at the Japan-British Exhibition in the United Kingdom and received an Honorary Award. We were also awarded two silver cups from the Royal Horticultural Society.

We handled the export of Sakura (Cherry Blossoms), a donation from Tokyo City, to Washington D.C.

April 1913: Opened a shop in Shin-Ogawamachi, Ushigome, Tokyo.

1914: Exhibited at the Chelsea Flower Show and won the Standard Cup (We exhibited at the show every year from 1913 until 1939, receiving multiple awards).

1915: Exhibited bonsai, a Japanese-style garden, etc., at the Panama Pacific World Exposition held in San Francisco, North America, receiving one honorary award, six gold medals, and five silver medals.

August 1916: Opened a shop in Otaru, Hokkaido.

November 1925: Constructed a pesticide manufacturing factory in Kawawa, Tsuzuki-gun, Kanagawa in preparation for the increasing demand for pesticides.

March 1926: Established the Totsuka Trial Farm in Gumizawa, Taisho, Kamakura, Kanagawa.

December 1931: Opened the Osaka Sprayer Factory in Kita, Osaka.

1933: Opened the Sapporo office in Sapporo, Hokkaido.

November 1941: The Osaka Sprayer Factory was refurbished and relocated to the Totsuka Trial Farm.

May 1942: Following the agricultural chemical company development policy set by the Ministry of Agriculture, Forestry, Toa Agricultural Chemicals was established in partnership with National Purchase Agriculture Cooperative Association. Koichi Suzuki, a director of the Company (later the fourth president), became the president of this association. The Kawawa factory was transferred to the new company.

March 1945: The Totsuka Trial Farm and Sprayer Factory were transferred by military mediation and the machinery was moved to the head office. All overseas branches and offices were closed after World War II.

February 1965: Established the Kikugawa Research Station in Kikugawa, Shizuoka.

June 1971: Received the Ministry of International Trade and Industry Award as an export contributing company.

1974: Our first hybrid carrot variety, US Mating Fresh Red 4 Inch, was awarded the first special prize by the Japan Seed Trade Association Variety Examination Committee.

April 1984: Establishment of a biotechnology department for the purpose of research and development of plants.

August 1988: Established the first branch field in Yoshizawa, Kikugawa, Shizuoka to enhance the vegetable seed research and development system.

1988: The iceberg lettuce variety Shizuka received the Minister of Agriculture, Forestry and Fisheries Award from the Japan Seed Trade Association Variety Examination Committee.

1988: First announcement regarding the red flesh melon variety Quincy. This long-selling variety is still on sale today.

January 1991: A celebration to commemorate the 100th anniversary of the founding of the company was held.

1996: Announcement the Radish variety Bushou. This is the first variety in Japan developed using cytoplasmic male sterility and was awarded the first prize from the Japan Seed Trade Association Variety Examination Committee.

May 1997: Noriaki Watanabe was appointed as the 10th president.

2003: The Bunching onion variety Kaseiro No. 2 was awarded the first prize by the Japan Seed Trade Association Variety Examination Committee.

October 2009: Received the Ministry of Construction City Bureau Director's Award (Harbor View Park).

December 2009: Awarded as an excellent construction contractor in the department of civil engineering by Yokohama City.

2010: Developed the world's first seedless green pepper variety, Tane Nappie.　Started selling in 2016.

November 2010: Completed the construction of a new Seed Center.

December 2012: Established the Horticultural Department Kyushu Sales Office in Kurume, Fukuoka.

February 2013: Obtained ISO9001 quality and ISO14001 environment certification by Headquarters Landscaping Department and Hokkaido Branch Landscaping Section.

May 2013: Kazuo Ariyoshi was appointed as the 11th president.

March 2014: Certified as the highest-ranked Yokohama-model regional contribution company.

December 2014: Received the excellent construction supervisor commendation for the expansion and maintenance work carried out at Ideto Park, Yokohama City.

January 2018: Completed a new office building of the Hokkaido Branch.

September 2018: Established overseas subsidiary, The Yokohama Ueki Chile SPA.

March 2019: Opened South Kyushu branch office in Miyakonojo, Miyazaki.

May 2019: Satoshi Ito was appointed as the 12th president.

2019: The Japanese radish variety Taketora was presented at the Daijosai, the first ceremonial offering of rice by the newly-enthroned Reiwa Emperor.

February 2020: Kikukawa Basic Research Laboratory was newly constructed.

2020: Release of the "Snow Miku Petunia" a variety which was a collaborative product of Snow Miku and Flower Pot & Petunia.

2020: Redesigned the packaging of the long-selling Arimetsu, an insecticide for ants which has been on sale for 93 years.

June 2021: 130th anniversary of foundation.