Soil improvement initiatives

Healthy soil is the foundation of all life on Earth. However, it is now facing unprecedented threats. Soil vitality is rapidly declining due to erosion, acidification, pollution, loss of organic matter, excessive compaction, and salinization.

Advanced Soil Improvement Business

・We manufacture 'Thoroughbred Miho,' a high-quality compost rich in beneficial microorganisms, using our patented short-term compost manufacturing process (Patent No. 6427823).
・We provide comprehensive soil diagnostics and individualized agricultural consulting to promote optimal microbial health.
・We lead collaborative research focused on leveraging microbial innovation technology to enhance soil quality, increase yield, and significantly reduce environmental impact.

Sustainable agricultural production

Supported by a healthy microbial ecosystem, we cultivate nutritious, sustainable crops such as melons, sweet potatoes, corn, and tomatoes.

Organic waste resource conversion

The thoroughbred horses used in racehorse training are seldom medicated due to doping controls, their manure is considered a high-quality organic resource. This branded compost was commercialized in 2019. It solves the challenges faced by both parties: the manure disposal problem for horse farms and the need for farmers to improve soil and create unique agricultural products.

Manufacturing and Sales of Thoroughbred Manure-Based Fermented Compost, 'Thoroughbred Miho'

In collaboration with Ibaraki University and the agricultural production corporation "Daichi no Megumi" through the Ministry of Agriculture, Forestry and Fisheries' industry-academia-government collaboration platform, we launched the "Thoroughbred Compost Ecosystem Project"※1. Based on the soil improvement technology cultivated over approximately 20 years at the Peony Garden, we manufacture and sell the Thoroughbred manure-based fermented compost, 'Thoroughbred Miho.' We aim to contribute to solving local environmental issues and promoting agriculture through soil improvement and advisory services.

※1 A collaborative organization that creates compost from manure generated at racehorse breeding farms and works to brand the agricultural products grown with it.

Operation of Peony Garden Tokyo in Tsukuba

1989年以来、観察と実践を重ね、土作りを重視し農薬不使用で牡丹（ボタン）と芍薬（シャクヤク）を育てています。独自に開発した堆肥と酵素農法はサステナブルな農業にも活用されています。

Operation of Japan's Largest Tree Peony(botan) and Stem Peony(shakuyaku) Garden, “Peony Garden Tokyo in Tsukuba”

We operate the "Tsukuba Peony Garden," a peony garden that has revitalized a natural satoyama (traditional countryside landscape) and boasts one of the world's foremost collections, with 800 varieties and 60,000 plants of peonies and stem peonies.

Leaf Co., Ltd.,（Soil Improvement Platform）

Leaf Co., Ltd. is restoring soil health and building a sustainable and resilient agricultural ecosystem by cultivating beneficial, invisible soil microorganisms.