Organic · Trusted · Field-Proven
Premium Organic Fertilizer
From Japanese Heritage
Premium organic fertilizer, crafted in Japan since 2001. Nearly 25 years of fermentation expertise from Chiba. Our NPK formulation achieves just 3% nitrogen leaching — so nutrients reach your crops, not the watershed.
About Sanwa
Built in Chiba
Trusted on farms.
Sanwa Fertilizer has produced organic fertilizer in Chiba Prefecture since 2001. We use pig, cow, and chicken manure refined through our proprietary fermentation process to deliver clean, consistent nutrition for soil and crop.
Our NPK formulation reaches just 3% nitrogen leaching — a benchmark few organic fertilizers achieve. More nutrients stay in your soil. Less runs off. Your plants get what they need without waste.
From home gardens to working farms, Sanwa is built for growers who care about what goes into the soil.
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Our Products
Organic fertilizers tested across crop types and growing conditions.
SANWA Cow
Manure 45kg
- Fully composted
- 3% nitrogen leaching
- JAS-eligible
A natural, fully composted organic fertilizer made from aged cow dung. Rich in essential nutrients and organic matter, it improves soil structure, boosts microbial activity, and supports long-term soil fertility. Ideal for organic farming, home gardening, and sustainable agriculture.
Our testimonials
Trusted by farms across Japan.
Real results from real growers — see how Sanwa performs in the field.
"Sanwa transformed the way I think about soil — and farming."
“Sanwa changed how I think about soil. Healthier crops, less runoff, better seasons overall.”
“Stronger root systems and noticeably better yields after one season. Sanwa is now my standard.”
“Switched to Sanwa for our tomato beds — earlier harvest, healthier plants. We won't go back.”
How to use Sanwa Fertilizer
3 Easy Steps to
Better Crops
Using Sanwa Fertilizer is simple and effective in just three easy steps. First, prepare the soil by loosening it and clearing any weeds or debris. Next, evenly apply the fertilizer around the plant base as recommended. Finally, water the area thoroughly to activate the nutrients and promote healthy growth.
- 01
Prepare the soil
Loosen soil and clear weeds around the planting area to create an open, receptive bed.
- 02
Apply the fertilizer
Spread evenly at the base of the plant. Follow the recommended rate on the bag for your crop type.
- 03
Water for activation
Water thoroughly to activate the nutrients and carry them down to the roots.
Simple application. Consistent results.
News & Events
Improve Your Knowledge
with Sanwa
Practical guidance on soil, organic farming, and getting more from every season.
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The key to thriving crops
Feed the soil. Grow with confidence.
25 years of Japanese fermentation expertise, packed into every bag. Try Sanwa on your next planting.