Eutrema alternative
Three times the calcium in every litre
Water sitting on the lawn after rain? Eutrema and Dr Forest both sell a liquid gypsum you water on. Ours is micronised gypsum in suspension at 19.55% calcium against Eutrema's 6%, so one litre covers 100 m² where theirs covers 25.
£19.99 1 litre · up to 100 m²
Choose Liquid GypsumBest results: take it with our wetting agent as Liquid Gypsum and Wetting Agent, from £24.29. The wetting agent gets the water, and the gypsum in it, into the ground.
★★★★★ Customer rated · 3,500+ ratings and feedback across eBay, Amazon, Google, Trustpilot and drforest.co.uk. Free UK delivery over £40. Dispatched in 1 to 2 working days. Packed in Stockport.
- 19.55% calcium and 15.31% sulphur w/v, against the 6% and 10% Eutrema lists.
- Gypsum in suspension keeps dissolving with every rain. A solution washes down with the first heavy one.
- Cheaper per square metre at every size: 13.5p to 26p, against 17.8p to 72p.
- Paired with our wetting agent, the gypsum goes in across the whole lawn instead of running to the low spots.
- Posted in 1 to 2 working days. Eutrema makes to order, with ten working days listed.
Side by side
| Dr Forest Liquid Gypsum | Eutrema Liquid Gypsum | |
|---|---|---|
| What it is | Micronised gypsum (calcium sulphate) in suspension. Thick; shake before use. | Described as a fully soluble solution. Ingredient not named. |
| Calcium | 19.55% w/v, about 195 g per litre | 6% w/v, 60 g per litre |
| Sulphur | 15.31% w/v | 10% w/v |
| Particle size | 5 micron average | Not stated |
| Lawn rate | 10 ml in 1 litre of water per m² | 250 ml in a 5 litre can per 6 m² |
| Sizes | 500 ml £12.99 · 1 L £19.99 · 5 L £72.99 · 2 × 5 L £135.00 | 1 L £17.99 · 5 L £29.00 · 20 L £89.00 |
| Covers | 50 · 100 · 500 · 1,000 m² | 25 · 125 · 500 m² |
| Cost per m² | 13.5p to 26p | 17.8p to 72p |
| Cost per 100 g calcium | £6.91 to £13.29 | £7.42 to £29.98 |
| Free UK delivery | Over £40 | Over £120 |
| Dispatch | 1 to 2 working days | Made to order, 10 working days listed |
Cost per m² is pack price divided by the area each maker gives for that pack: ours at the 10 ml per m² lawn rate, Eutrema's at its own 25, 125 and 500 m² figures. At the two lawn rates Eutrema puts down about 2.5 g of calcium per m² and ours about 2.0 g, which is why we also show cost per 100 g of calcium. Eutrema prices, analysis, rates, delivery terms and description from its own site, checked 3 Nov 2026; it does not say whether its prices include VAT. Eutrema is a trademark of its owner; Dr Forest is not affiliated.
Why a clear liquid cannot be gypsum
Gypsum is calcium sulphate. Stir it into water and about 2.5 g dissolves in each litre, then it stops. That is 0.6 g of calcium. Eutrema's bottle holds 60 g of calcium per litre and stays clear, so whatever is in it, it is not dissolved gypsum.
Gypsum solubility about 2.5 g per litre at 20 °C, 23% of it calcium. Eutrema's figure from its listed 6% w/v; ours from the label, 19.55% w/v.
Eutrema does not name its ingredient. 6% calcium with 10% sulphur is the standard analysis for calcium thiosulphate, a clear liquid fertiliser. In gypsum, and in our bottle, the calcium outweighs the sulphur.
Here is why it matters. A solution acts the moment it lands, and leaves the moment the rain carries it down. Gypsum in suspension leaves 5 micron particles at the surface that dissolve with each rain, so there is calcium in the surface water through the wet months, which is exactly when clay seals over. That is the job. It is also why ours is thick in the bottle. Give it a shake before use.
Get it into the ground
Gypsum only works where it lands and soaks in. A clay lawn that has dried into a crust sheds water, and the gypsum runs off with it to the low spots. Our Natural Wetting Agent in the same can breaks that surface tension, so the water and the calcium in it go into the ground evenly, across the whole lawn. Better penetration, better coverage, better result.
£37.79 1 litre of each · about 10% off buying separately
Choose the pairWetting agent first, gypsum second, same can. Rates and timing are on the pair page.
When Eutrema is the better buy
- You want the lowest shelf price on a 5 litre and don't mind it covering less ground.
- You want a thin, clear liquid with nothing to shake.
- You treat fields or sports turf and want 20 litre drums and rates per hectare.
Common questions
Is Eutrema Liquid Gypsum actually gypsum?
Eutrema does not say. Its pages describe a fully soluble solution with 6% calcium and 10% sulphur. Gypsum dissolves to about 0.06% calcium at most, so a clear 6% solution cannot be gypsum. Those figures are the standard analysis for calcium thiosulphate.
Which works faster?
Theirs, on day one. Dissolved calcium is in the soil water as soon as it lands. Ours dissolves over the weeks that follow, which is what keeps the surface open through a wet winter rather than a wet afternoon.
Why does your 5 litre cost more?
It holds more than three times the calcium. Our 5 litres covers 500 m² at the lawn rate; Eutrema lists its 5 litres for 125 m². Per square metre ours works out at 14.6p and theirs at 23.2p.
Will liquid gypsum fix my waterlogged lawn?
Only if the water sits there because the clay disperses and seals over. It will not fix compaction, a high water table or a missing drain. Drop a dry crumb of your soil into a glass of rainwater: a milky halo means gypsum has a job to do.
More: all brand alternatives · Natural Wetting Agent
Get it on before the winter rain
10 ml in a litre of water per square metre, from a can with a rose. Shake it first. Add the wetting agent to the same can and it goes in instead of running off.
£19.99 1 litre · up to 100 m²
Free UK delivery over £40. Dispatched in 1 to 2 working days. Packed in Stockport.
For the clay-soil case in full, see liquid gypsum for clay soil.