IMPRESS: Clay Master Lawn Seed
- Expertly created for clay soils
- Deep rooting and drought tolerant
- Hard-wearing, fast-growing and resilient
Size / Weight |
New Lawn (50g per m²) |
Overseeding (35g per m²) |
2kg |
40m² |
57m² |
5kg |
100m² |
143m² |
10kg |
200m² |
286m² |
20kg |
400m² |
571.5m² |

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- Completes 3 jobs in one application
- Kills moss, controls weeds and makes your lawn instantly green
- Works in three short steps to restore your lawn

- Deep rooting wildflowers hold their own in heavy clay soils
- Perennials provide a year on year range of species variety and colour
- Makes problematic areas part of the garden again
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How much do I need?
Simply enter the length and width of the area, to calculate how much you need.
Product Description
IMPRESS: Clay Master Lawn Seed is a specially blended grass seed mixture designed for clay and heavy clay soil conditions. The tall fescue component has a strong deep rooting system which not only allows it to penetrate your clay soils effectively but ensures a drought-tolerant lawn, especially in clay soils that are prone to dryness. The perennial ryegrass in this mix makes way for a fast-growing and hard-wearing lawn to thrive.
If your clay soils are also suffering from shade, combine this mix with one of our shaded mixes to give your shaded clay soil lawn the complete solution it needs to impress. So, what are you waiting for? It's time to finally master your clay soils!
All our grass seed is of the highest quality and purity, offering excellent germination rates and are covered by our Grass Seed Growth Guarantee.
What area does each IMPRESS: Clay Master Lawn Seed bag cover?
New lawn | Overseeding an existing lawn |
2kg - 40m2 5kg - 100m2 10kg - 200m2 20kg - 400m2 |
2kg - 57m2 5kg - 143m2 10kg - 286m2 20kg - 571.5m2 |
Mixture Breakdown
Drag the slider below to see the difference IMPRESS: Clay Master could make to your garden.
Usage Guide
Sowing a new lawn with IMPRESS: Clay Master Lawn Seed
● Dig the soil over to a depth of 20-25cm
● Remove weeds by hand or use a weed killer
● Add top soil if you believe the soil to be poor quality or unlevel
● Rake the area to get a level seedbed
● Sow the seed at our recommended rate of 50g per m2, by using a seed spreader or your hand
● Rake the seed in after sowing so that the seed is in amongst the soil
● Allow the seedbed to cultivate for 10-14 days to encourage any weeds to come to the surface, then remove any weeds that appear by hand
● Firm down by foot or by using a roller to improve seed to soil contact
● Water the just-sown seed well
Read our full guide How to sow a new lawn.
Overseeding an existing lawn with IMPRESS: Clay Master Lawn Seed
● Remove any dead grass, weeds or moss by scarifying / raking the area
● Rake the area enough so that the soil is loose and not compact
● Sow the seed at our recommended rate of 35g per m2, by using a seed spreader or your hand
● Rake the seed in after sowing so that the seed is in amongst the soil
● Allow the seedbed to cultivate for 10-14 days to encourage any weeds to come to the surface, then remove any weeds that appear by hand
● Firm down by foot or by using a roller to improve seed to soil contact
● Water the just-sown seed well
Learn more with our guide How to overseed a lawn.
IMPRESS: Clay Master Lawn Seed Sowing Guide & Pack Sizes
Recommended Mowing Height | 20 - 40mm |
Sowing Rate (New Lawn) |
Bag Coverage 2kg covers 40m2 5kg covers 100m2 10kg covers 200m2 20kg covers 400m2 |
Sowing Rate (Overseeding an Existing Lawn) |
Bag Coverage 2kg covers 57m2 5kg covers 143m2 10kg covers 286m2 20kg covers 571.5m2 |
Aftercare
Aftercare
● Continue to water your lawn deeply and daily for the next six weeks, avoiding if there is prolonged rainfall
● Your lawn will take up to 6 weeks to fully establish
● Once there is an even coverage throughout the lawn and grass blades are hitting heights of 5-7cm, your lawn is ready for its first mow on the highest setting
● To keep your lawn healthy, green and disease / weed free, remember to regularly fertilise