Special fertilizer — compost
SANWA Cow Manure
Aged cow manure compost — the slowest and steadiest of the three.
- Fully composted
- 3% nitrogen leaching
- JAS-eligible
- 20L (8.5kg)¥780¥92/kg
- 40L (17kg)¥1,280¥75/kg
Coming soon on Amazon and Rakuten.
Price includes tax. Delivery is charged separately, by destination and bag size.
Not sure how much you need? Calculate it →- Classification
- Special fertilizer — compost
- Sizes
- 20L (8.5kg)・40L (17kg)
Verify Your Batch
Every bag carries a lot number. Type it in and you can see where it was made, what the laboratory measured in it, and when it left our yard.
- Made in Yokoshibahikari, ChibaFermented and bagged at our own yard since 2001.
- Every lot laboratory-testedNitrogen, phosphorus and potash measured before it ships.
- Trace any bag by its lot numberThe QR code on the bag opens that lot's own record.
- Shipped from our own yardPacked and dispatched by the people who made it.
The record
What is in it
- Classification
- Special fertilizer — compost
- Raw materials
- Cow manure (Chiba), rice bran (Japan), natural microbial inoculants
- Made at
- Sanwa plant, Yokoshibahikari, Chiba
- Sizes
- 20L (8.5kg) — ¥780 · 40L (17kg) — ¥1,280
What it's for
The base dressing at the start of a season: structure and long-term fertility rather than a quick push.
When to apply
Before planting, at the start of the growing season.
Handling and storage
Store dry and closed. The bag is heavy for its size — 40L weighs about 17kg.
Certifications
JAS Organic Compliant
Eligible for use in JAS Organic-certified farming. Formulated to meet the standards required for use in JAS Organic-certified agricultural production.
- Verified compliance with Japan Agricultural Standards
- Safe for organic farms and certified operations
- No prohibited synthetic additives
- Independently assessed formulation
About Sanwa products
Why growers choose it
- 01
62% organic matter — a soil builder first and a feed second.
- 02
Neutral to slightly alkaline, so it suits ground that has been worked hard.
- 03
Sold by volume in 20L and 40L bags, which is how a bed is measured.
How to use Sanwa Fertilizer
Using it is three steps
Simple application. Consistent results.
01Prepare the bed
Before planting, clear weeds and loosen the soil so it can take the compost.
- 02
Work it in
Mix it through the top 15–20cm. Left on the surface it works far more slowly.
03Water, then let it rest
Water after spreading and leave it a while before sowing or transplanting.
Before you order
Questions growers ask
Why litres rather than kilograms?
Because a bed is measured by volume. For reference, 20L weighs about 8.5kg and 40L about 17kg.
Can I add it to the same field every year?
It is meant for continuous soil building, but nutrients accumulate. Have the soil tested every few years and adjust what you put on.
Will it help soil that has gone acidic?
The latest lot measured pH 7.8 — neutral to slightly alkaline — which suits ground that has gone sour. If you also lime, work from a soil test.
How is it different from the chicken pellet?
The cow manure is slow — 62% organic matter, worked in before planting. The chicken pellet is fast and high in nitrogen, scattered mid-season. Different jobs; most growers use both.
Can I put it on over winter?
Yes — before planting is what matters, and many growers like to let it settle into the soil early.
How heavy is it, and how does it ship?
40L is about 17kg. It goes by courier; enter your postcode above and the page gives you the delivery cost.
