3 For 2 on Christmas Cropping Potatoes

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Buy 1 Get 1 Half Price

When you add this variety to basket. Discount automatically applies at checkout.

Buy 2 Save £10.00 on This Variety

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3 for 2 on Same Variety 9cm Plants

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Free Delivery When You Spend £40 on Seed Only Orders

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Add this product to your basket PLUS a further £10 worth of any products. The free item will be automatically discounted during check out. Hurry! Only available for the first 2,023 orders - ends midnight Monday.

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Shell on Earth Crushed Whelk Shells Large - 1 x 11kg Bag

Shell On Earth


Catalogue Code: 10909297

Sale price

In stock

Regular price £12.99
Recycled crushed, washed and dried whelk shells make an ideal slug repellent for the garden. A by-product from a small family seafood business based in the heart of West Wales in Cardigan Bay.

Pack Contents: 1 x 11kg Bag of Crushed Whelk Shells


  • 11kg
  • Caught locally using sustainable methods
  • Natural slug deterrent
  • Ideal for garden borders, beds, rockeries
  • Fully recyclable bag which is strong enough to reuse

Recycled crushed, washed and dried whelk shells make an ideal slug repellent for the garden.

A by-product from a small family seafood business based in the heart of West Wales in Cardigan Bay. The whelks are caught locally using sustainable methods utilising traditional, low-impact pots, processed for the restaurant industry and the shells are then crushed, washed three times, and dried into this award winning mulch. The large 12 litre bag contains approximately 11kg of shells, and is ideal for garden borders, beds, rockeries or as an outdoor plant pot topper.

The crushed shells can also be used for drainage or added to soil for aeration. They also work well as a mulch conserving water in the soil and as a gentle, natural slug deterrent when a generous layer (20-30mm) is added around the base of plants. A great alternative to top dressing with potting grit and are highly effective as any slug repellent. This bag will give coverage for approximately 1/2 a square metre.

Shop our double bag here.


We know how important your garden is to you. We've listened to our customers and introduced a new improved speedy delivery service, meaning Express delivery comes as standard.

*Orders to Northern Ireland have an automatic additional £3.00 delivery surcharge applied at checkout. 

Order TypeDelivery ChargeDelivery Charge
Seed only order£2.99If you purchase any other items you'll be charged the standard delivery rate of £5.99
Plants, bulbs & gardening accessories£5.99If we need to split your order into separate deliveries we'll only charge one delivery fee
Extra large or long plants & heavy items£9.99These are clearly displayed at check-out
Compost (and any other large or heavy items)£5.99

These items are subject to a delivery multiplier where orders containing 3 or 4 items will be subject to an additional £5.99 for every further 2 items added. This is automatically applied at check-out:

  • 1 - 2 bags £5.99
  • 3 - 4 bags £11.98
  • 5 - 6 bags £17.97
  • 7 - 8 bags £23.96
  • 9 - 10 bags £29.95

If you'd like more than 10 bags of compost please call our Customer Service team who can arrange for a bespoke competitive quote on 01480 774555 (standard network charges apply)

For more detail on specific delivery queries and compost delivery please click here

Delivery to outside of Great Britain

We regret we are unable to deliver any items outside of some Great Britain delivery addresses. This includes Europe, Channel Islands, Republic of Ireland, USA and Rest of World. We will update our website if this changes. 

We now deliver to Northern Ireland, additional delivery surcharges automatically apply at checkout. 

For more information about our deliveries please click here.