---
product_id: 49283296
title: "for Agricultural Amendment, Amend Very Compact Clay Soils, 25 kg Bag"
brand: "british gypsum"
price: "¥95250"
currency: JPY
in_stock: true
reviews_count: 8
category: "British Gypsum"
url: https://www.desertcart.jp/products/49283296-for-agricultural-amendment-amend-very-compact-clay-soils-25-kg
store_origin: JP
region: Japan
---

# Improves soil structure fast Water-soluble for quick absorption 25 kg heavy-duty bag for Agricultural Amendment, Amend Very Compact Clay Soils, 25 kg Bag

**Brand:** british gypsum
**Price:** ¥95250
**Availability:** ✅ In Stock

## Summary

> 🌿 Unlock your soil’s potential—ditch the mud, embrace lush growth!

## Quick Answers

- **What is this?** for Agricultural Amendment, Amend Very Compact Clay Soils, 25 kg Bag by british gypsum
- **How much does it cost?** ¥95250 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/49283296-for-agricultural-amendment-amend-very-compact-clay-soils-25-kg)

## Best For

- british gypsum enthusiasts

## Why This Product

- Trusted british gypsum brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Application:** Simply spread and water in—no complicated prep needed, saving you time and effort.
- • **Rich in Sulphur & Calcium:** Boosts essential nutrients for vibrant, resilient plants and greener lawns.
- • **Transform Heavy Clay Soils:** Breaks down compacted soil for easier cultivation and healthier roots.
- • **Fast-Acting Natural Formula:** Quickly dissolves and integrates, speeding up soil recovery and plant growth.
- • **Trusted by Gardeners & Farmers:** Proven performance with thousands of 4.5-star reviews and top rankings in gardening soils.

## Overview

British Gypsum Agricultural Amendment is a 25 kg bag of ground gypsum designed to improve heavy clay soils by breaking down compaction quickly and naturally. Water-soluble and rich in sulphur and calcium, it enhances soil structure and nutrient content, making it ideal for farmland, sports fields, and gardens. Easy to apply and highly rated by users, it helps transform unworkable soil into vibrant, healthy ground.

## Description

Product description Ground gypsum for soil treatment, main applications include: To improve the structure of heavy clay soils on farmland,sports fields and gardens. As a carrier in horticultural dressings and garden products As a source of sulphur and calcium, Directions Apply liberally to cover plants, grass, and soil. Water soluble, absorbs quickly into the soil. P.when('A').execute(function(A) { A.on('a:expander:toggle_description:toggle:collapse', function(data) { window.scroll(0, data.expander.$expander[0].offsetTop-100); }); }); Safety Warning May cause irritation to skin and eyes. Avoid contact with skin and eyes. Do not ingest or inhale. Use protective clothing, gloves, and eye/face protection during application. Keep out of reach of children and pets. In case of accidental exposure, rinse thoroughly with water. Store in a cool, dry place away from heat sources and incompatible materials. See more

Review: Time will Tell - But Seems to be working on heavy clay soil! - Our garden is heavy clay soil - we have tried everything to stop it bogging in the winter but we always fail miserably, which requires the grass to either be re turfed or re seeded every single spring - this has gone on for 12 years! Our garden becomes to muddy that we are just unable to use it over the winter months. We have had some very heavy rain recently and since putting half a bag of this gypsum down the grass has stayed green and alive and the clay has not bogged - no water pools! So far i am super pleased - lets see how we fair over the coming winter months! However first impressions are great!
Review: Top Item, quick delivery - All good fast delivery despite the bigh weight, perfect for the job.

## Features

- Will break down heavy unworkable soils
- Easy to apply
- Breaks down quickly and naturally.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00CORDKW2 |
| Best Sellers Rank | 15,972 in Garden ( See Top 100 in Garden ) 396 in Gardening Soils |
| Customer Reviews | 4.5 4.5 out of 5 stars (564) |
| Date First Available | 7 May 2013 |
| Item model number | ves769 |
| Manufacturer | British Gypsum |
| Part number | ves769 |
| Product Dimensions | 50 x 40 x 15 cm; 25 kg |

## Product Details

- **Brand:** British Gypsum
- **Global Trade Identification Number:** 05027588009480
- **Item form:** Powder
- **Item weight:** 25 Kilograms
- **Specific uses for product:** Soil Treatment

## Images

![for Agricultural Amendment, Amend Very Compact Clay Soils, 25 kg Bag - Image 1](https://m.media-amazon.com/images/I/61G9o71IS-L.jpg)

## Questions & Answers

**Q: How do you apply it? Do you just put it on top of the soil? Do you water it afterwards?**
A: Oooh, you really don't want me to answer that, because I am something of a nutcase on the subject. A year ago I moved into a place with terrible heavy clay soil over builder's rubble, with a seam of clay under that, and wanted to dig the beds once, then never again. So I have dug out every scrap of soil, 3 feet down and riddled (sieved) it all to get out the rubble and break it up, mixed the gypsum into each bucket-load of soil and put it all in a dumpy bag. Then broke up the clay seam at the bottom of the trench with a mattock and poured in a good thick drainage layer of the smaller rubble, more gypsum in the form of wetted offcuts of new plasterboard and a load of conifer trimmings (will break down slowly, add some organic material and in theory some acidity, also gets rid of the conifer trimmings). I then then backfilled with the treated soil and at least an equal quantity of well-rotted manure. I am now in my second season and the beds are a dream - light, well-drained, ridiculously fertile, and packed with worms - more than I have ever seen in any soil. I have just added a mulch of more manure and loosely turned it in, but that is it. I have set up supports so that I can lay a plank across and not put any weight on the surface of the beds. 

So - you may not have wanted to hear all that - but I did read somewhere that gypsum will eventually wash out of a soil, so my approach was the use it to initially condition a clay soil (fertile, but otherwise a total nightmare), then maintain the condition with lots and lots of organic material (effectively stopping the clay from clumping together again) and let the worms do the rest.

And I am an old bird - a retired nurse with messed up wrists and shoulders, so not some big strapping chap - but I would do it all again to know that this is it forever, and there isn't anything I can't grow, as it also means that I can control the pH in different beds for different plants and crops.

Sorry - as I said, you really didn't want me to answer that!

**Q: can you please let me know HOW to put the gypsum?? do i dig the soil & turn it over (this is difficult). or just on top of soil.**
A: Gypsum penetrates more easily than lime so deep working was not recommended. I forked the ground down to about 6 inches and broke the bigger clods to 2-3 inches. The gypsum was fine free flowing and easy to apply evenly, at 5oz/sqyd. Compared to lime it went into the finest cracks without caking.

**Q: My home was built recently and the garden is about 8" of topsoil over clay, when it rains the lawn is sodden. What's the best method of application?**
A: I removed the topsoil, into large bags, sprinkled a good layer of gypsum onto the clay (impossible to dig it in) and then replaced the topsoil, also mixed with gypsum. It worked well...no puddles!

**Q: Is this product plain Gypsum or are there more substances added? Do you have some experience with mushroom cultivation with this product?**
A: is this 100% pure or does it have anything added to it?
(I want it for mushroom cultivation)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Time will Tell - But Seems to be working on heavy clay soil!
*by T***D on 17 October 2024*

Our garden is heavy clay soil - we have tried everything to stop it bogging in the winter but we always fail miserably, which requires the grass to either be re turfed or re seeded every single spring - this has gone on for 12 years! Our garden becomes to muddy that we are just unable to use it over the winter months. We have had some very heavy rain recently and since putting half a bag of this gypsum down the grass has stayed green and alive and the clay has not bogged - no water pools! So far i am super pleased - lets see how we fair over the coming winter months! However first impressions are great!

### ⭐⭐⭐⭐⭐ Top Item, quick delivery
*by C***8 on 8 April 2025*

All good fast delivery despite the bigh weight, perfect for the job.

### ⭐⭐⭐⭐ agricultural british gypsum
*by K***T on 28 April 2016*

Our garden was quite boggy, you couldn't walk on it for sinking and sliding about, I added loads of rotted manure and 3 tons of sharp sand, left it for about a yr now I'm trying the gypsum. I put the gypsum on our clay soil a few days ago, I think its working, im quite impatient in getting the garden sorted but it all takes time! In some parts its still quite sticky and heavy so will need to buy some more gypsum. We don't sink or slide about and in some parts its quite crumbly so yeh getting there! Its good that it doesn't alter the ph of the soil when you just need something to break the clay up and aid drainage plus it adds some nutrients for plant roots too when eventually we get to be able to plant some plants! 😊

## Frequently Bought Together

- British Gypsum for Agricultural Amendment, Amend Very Compact Clay Soils, 25 kg Bag
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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-15*