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Wet Soils & Clay Grass Seed



Grass seed for clay soils that often sit wet or suffer from occasional flooding. Sometimes a wet lawn is unavoidable, especially on a clay soil, so it makes perfect sense to select a grass seed mixture that will tolerate wet soil conditions.

Heavy clay soils are often saturated in the winter, but can rapidly turn bone dry in the summer. Our Wet Soils Grass Seed contains tall fescue which is deep rooted and extremely tolerant of this type of soil condition.


  • 40% Perennial ryegrass
  • 40% Tall fescue
  • 20% Strong creeping red fescue
  • Available for Next Day Delivery (order before 12 noon)
  • Description
  • Sowing Advice
  • Grass Calculator
  • Delivery
  • Reviews

Our Wet Soils Grass Seed is formulated to be used in areas that are prone to the occasional flood or seasonal waterlogging. The mixture can tolerate not only wet soil conditions but also short periods of flooding too and prolonged dry periods during the summer months.

  • Sowing rate = 30-40g per m²
  • At the above sowing rate 20kg will cover 500-660m²
  • For more information on sowing, please see our guide on How to Sow Grass Seed
Grass Seed Calculator

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  • Standard 2-3 day delivery is included on all orders to addresses in mainland England, Wales and most areas of Scotland.
  • Products that are available for next day delivery are indicated on the product page. Next day orders must be placed before 12pm.
  • Please input your delivery address in the checkout to see the full range of delivery options available for your location.
  • For more information on deliveries, please see our Delivery Information page.

Customer Reviews

Based on 10 reviews
Julia Haynes
Exceptional Service

Yet again, exceptional service given by Tom. Extremely knowledgeable. Our installers have had no issues with the product. Highly recommended.

Ian Taylor

Early days yet,seed just starting to show through

Brilliant Seed

We have spent £'s on boxes of seed from Garden Centre's trying desperately to get a lawn to grow on soggy, clay soil when, by accident, we came across Grass Seed Online. This seed is incredible and does exactly what it as it advertised as. Instead of bare ground with pools of water we now have a lush, thick lawn. We just wish we had come across it before. Would recommend without hesitation.

Roderick Lane
Will it survive?

Very pleased with the service from Grass Seed Online and hopefully with the product. This seed takes a bit longer to germinate than the garden centre offerings and looks very thin to begin with. However, puts on weight and grows strongly. The real test will come over Winter where the more usual commercial boxed lawn seed has drowned each past year. Ask me next spring!

John Sneddon
Very satisfied

Grass seeds have germinated some earlier than others but nevertheless I have a green lawn after 4 weeks. The delivery time within 24 hours was met time and time again. I’m so pleased with the entire experience I will be using Boston Seeds for all my ongoing lawn requirements.

Our grasses are tried, tested and proven.

we have close and longstanding relationships with experience seed growing specialists

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