Best Liquid Gypsum UK (2026)

Full disclosure: GYP-FLO is our product. We make the case for it below with specifics rather than adjectives, and we tell you plainly when a competitor is the better buy for your situation.

The short answer

For professional sports turf, golf courses and commercial growing, GYP-FLO is the strongest option we know of in the UK: a 5-micron liquid suspension at 35% calcium and 25% sulphur (w/v), backed by four years of field trials. For a domestic lawn or garden border, a retail product like Eutrema costs less and is easier to buy in small quantities.

The five options compared

1. GYP-FLO (Ultrasoil): best for professional turf and agriculture

A liquid suspension of technical-grade calcium sulphate milled to 5-micron particles, which keeps the gypsum active in the rootzone rather than settling out as coarse grit. Analysis is 35% calcium and 25% sulphur (w/v), and it applies through boom sprayers, drip and overhead irrigation. It is the product we supply to grounds teams at Premier League clubs and championship golf venues. If you manage turf or crops for a living, this is the one to trial first.

2. Eutrema Liquid Gypsum: best for gardens and small lawns

Widely available (including on Amazon), sensibly priced in 1-5 litre sizes, and well reviewed by home gardeners tackling heavy clay beds and waterlogged lawns. The analysis is lighter than professional products, but for a 100 m² garden that trade-off is usually right.

3. Plater Bio Liquid Gypsum: best for industrial and bulk agricultural use

Plater Group is a chemical manufacturer supplying liquid gypsum in bulk volumes for agriculture and land remediation. If you are buying by the IBC for broadacre work and have your own agronomy support, they are a credible supplier.

4. Agrovista liquid gypsum: best if you already buy through an agronomist

Agrovista distributes a liquid gypsum in its Innovation Range. The product is sound; the reason to choose it is convenience if Agrovista already handles your agronomy and you want one invoice, not a new supplier relationship.

5. Vitax Clay Breaker (granular): best if you prefer granular

Not a liquid at all, but worth including because many buyers comparing liquid gypsum should also consider granular. Vitax Clay Breaker is a garden-centre staple for digging into heavy clay beds. It works, just slowly, and it cannot be applied through a sprayer or irrigation. See our comparison of liquid vs granular gypsum for when each form wins.

How to choose

• Professional turf or commercial crops: particle size and analysis matter most; fine particles stay active in the soil. GYP-FLO, then Plater Bio for bulk.
• Domestic lawn or garden: buy small, buy cheap, reapply next season. Eutrema or similar retail brands.
• Check your problem is one gypsum solves: gypsum is most effective on sodium-affected and compacted soils. If you are unsure, read does gypsum work on clay soil? first. No brand of gypsum fixes a drainage problem caused by a high water table.

Frequently asked questions

Is liquid gypsum better than granular gypsum?

Liquid gypsum acts faster because its fine particles dissolve and reach clay particles quickly, and it can go through sprayers and irrigation. Granular is cheaper per kilo of calcium but slower to act. For established turf you cannot dig over, liquid is usually the practical choice.

How often should liquid gypsum be applied?

Most programmes run two to four applications per year, matched to soil test results. Sodium-affected soils under irrigation may need more frequent treatment. Follow the product label; see our application rate guide.

Does liquid gypsum change soil pH?

No. Unlike lime, gypsum (calcium sulphate) adds calcium without significantly raising pH, which is why it is safe on soils where pH is already correct. The RHS covers the chemistry of clay soils here.