4-in-1 Lawn Treatment 20kg Fertiliser & Weed Killer
This weed, feed and moss killer is a granular 4-in-1 lawn treatment that brings together a lawn fertiliser, a selective systemic weedkiller and iron for moss suppression in a single application. The granules make it a practical choice for established lawns and many other turf areas.
Key Features
- 4-in-1 formula: fertiliser, selective systemic weedkiller and iron to suppress moss
- 10% nitrogen drawn from two separate sources, feeding the grass steadily for up to six weeks
- Phosphorus and potassium included to encourage strong, healthy growth
- Iron improves lawn colour and helps control moss
- Three different herbicides combine to deal easily with common turf weeds
- Granular formulation suited to established lawns and a wide range of turf areas
Target Weeds
Treats a wide range of common broadleaved weeds in grass and turf surfaces.
| Weeds Controlled |
|---|
| Broadleaved weeds including: Dandelion, Creeping buttercup, Daisy, Plantains, Chickweed, Selfheal, Thyme leaved Speedwell, White Clover |
The product label gives further details of susceptible weeds.
How to Use
Where to use
Suitable for any lawn or other area of closely mown grass.
When to use
For best results, apply during periods of active growth, usually spring and summer, when the turf, weeds and moss are all growing actively and the soil is moist.
- Do not mow for three days before treatment, or for at least four days afterwards
- Do not apply when heavy rain is forecast or in windy weather
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| – | – | Limited | Yes | Yes | Yes | Yes | Yes | Yes | Limited | – | – |
Application method
- Mark out the area to be treated and spread the product evenly at 32g/m² across it
- Apply by hand or with a suitably calibrated granular applicator
- Keep granules and dust away from ornamental plants, shrubs and any fruit or vegetable crops
- If no rain falls within 48 hours of application, water the lawn to help activate the product
- When the moss has died back, remove it by raking or scarifying roughly 7–14 days after treatment
- Severe moss infestations, or moss that returns, may need a further application
| Maximum Treatments | Application Rates | Application Method |
|---|---|---|
| 2 | 32g/m² | Apply evenly by hand or calibrated granule spreader |
Spreader settings
| Spreader | Spread Width | Cone | Setting |
|---|---|---|---|
| 3.4m-width spreader | 3.4m | N/A | 16 |
| 4.0m-width spreader | 4.0m | 6 | 0 |
Applications
- Lawns
- Other areas of closely mown grass and turf
Specifications
| Product Overview | |
|---|---|
| Product Type | Multi-Purpose |
| Active Substances | 2.86g/kg 2,4-D 0.57g/kg dicamba 2.86g/kg mecoprop-P 217g/kg iron sulphate |
| Formulation | Granular |
| Areas of Use | Lawns |
| Amateur/Professional | Amateur |
Pack Coverage
| Bag Size | Coverage |
|---|---|
| 5kg | 156m² |
| 10kg | 312m² |
| 20kg | 625m² |
Notes
- Moss darkens and turns black as it dies back
- Any discolouration of the turf is only temporary
- Only weeds that come into direct contact with the herbicide granules will be controlled
- Do not reseed or lay turf for at least six weeks after application
- Do not use clippings from the first four cuts as mulch around cultivated plants unless they have been composted for at least six months
- May be applied up to twice in one growing season




