Frass Fertiliser – Organic Mealworm Frass for Healthy, Thriving Plants

  • Frass Fertiliser: Organic Mealworm Frass for Healthy, Thriving Plants
  • Frass Fertiliser: Organic Mealworm Frass for Healthy, Thriving Plants
  • Frass Fertiliser: Organic Mealworm Frass for Healthy, Thriving Plants
  • Frass Fertiliser: Organic Mealworm Frass for Healthy, Thriving Plants
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£8.95
£8.95
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A natural, organic fertiliser made from mealworm frass — packed with nutrients, beneficial microbes and chitin to improve soil health, boost plant growth and strengthen natural resistance to pests and disease. Easy to use, long-lasting and suitable for all plants, indoors and out. Save over 35% per litre with the 5L size

IN STOCK 🌱

A powerful, natural fertiliser made from mealworm frass — delivering nutrients, beneficial microbes, and plant-strengthening compounds in one simple application.

What Is Frass?

Frass is the natural by-product of mealworm farming — a rich blend of:

  • Nutrient-dense droppings

  • Organic matter

  • Beneficial microbes

  • Insect exoskeleton fragments (chitin)

It’s completely natural, sustainable, and incredibly effective.

Why Frass Works So Well

Frass doesn’t just feed plants — it improves the entire soil system.

  • Provides essential nutrients (N, P, K) for plant growth

  • Introduces beneficial microbes that improve soil health

  • Contains chitin, helping trigger plant defence systems

  • Improves root development and nutrient uptake

The result: stronger, healthier, more resilient plants

  • Fully secure checkout
  • Supporting British Farming
  • Rated Platinum on Judge.me
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Compost

  • Adds organic matter
  • Improves soil structure
  • Low in nutrients

👉 Good for soil bulk, but limited feeding power

Chemical Fertiliser

  • Fast, strong nutrient hit
  • Quick visible growth
  • Doesn’t support soil life

👉 Feeds the plant, not the soil

Frass Fertiliser

  • Nutrients + microbes together
  • Contains chitin for plant defence
  • Improves soil biology
  • Slow, steady release — no burning

👉 Feeds both soil and plant properly

What This Means in Practice

  • Compost builds the base
  • Fertiliser boosts growth
  • Frass does both — properly

Most fertilisers feed the plant.

Frass feeds the soil.

  • Slow-release nutrients — no sudden spikes
  • No risk of burning plants
  • Improves soil structure over time
  • Supports worms, fungi and microbial life

What You’ll Notice

  • Stronger root systems
  • Better growth and greener leaves
  • Improved resilience to pests and stress
  • Healthier soil over time

A little goes a long way.

  • 1L treats multiple pots or a small garden area
  • 5L covers larger beds or ongoing feeding

Because it feeds soil biology as well as plants, the benefits continue over time — making it far more effective than quick-release fertilisers.

👉 Most customers find one bag lasts far longer than expected

  • Vegetables and allotments
  • Flower beds and borders
  • Pots, containers and houseplants
  • Lawns and general garden use

Safe, gentle and effective across all growing environments.

Farm Tour Voucher

Why Buy from Wiggly Wigglers?

At Lower Blakemere Farm in Herefordshire, we’ve been championing composting, soil health and biodiversity for over 30 years.

Since 2006, we’ve been supplying live mealworms and their by-products to gardeners, wildlife enthusiasts and organisations including the RSPB.

We operate as a British family farm using regenerative principles — integrating crops and livestock in a closed-loop system that improves soil, reduces waste and supports wildlife.

By choosing Wiggly Wigglers, you’re supporting a small rural business working to create healthier soil and a greener future.

FAQs

How often should I use frass fertiliser?
Every 2–4 weeks during the growing season is ideal.

Is frass safe for all plants?
Yes — suitable for flowers, vegetables, lawns and houseplants.

Can frass help deter pests?
Yes — chitin helps plants activate natural defence systems.

Healthy soil grows better plants — and frass helps you build it properly

If you want stronger plants, fewer problems and better soil year after year — this is one of the simplest upgrades you can make.

The Wiggly Story: Bringing Your Garden to Life.

Nestled in the heart of rural Herefordshire, within The Duchy of Cornwall estate lies Lower Blakemere Farm – the cherished home of Wiggly Wigglers and founder, Heather Gorringe. From its humble beginnings on Heather’s kitchen table over 30 years ago, our small but dedicated team is working hard on a legacy of sustainability and regeneration. Our farm isn’t merely a plot of land; it’s a dynamic hub where we’re aiming to balance food production with biodiversity and since we started our regenerative journey there’s a real focus on improving soil health and sustainability. Beyond our own endeavours, we’re passionate about sharing best practices and developing products designed to Bring your Garden to life.

Delivery Information

Standard Delivery (£4.95)
2-5 working days. Mainland Britain.
Royal Mail or Parcelforce.

Next Day Delivery (£7.95) – Mainland Britain
Only if you need a guaranteed Next Day delivery then please choose the Next Day delivery option. Please note there are no deliveries on Saturdays, Sundays or Bank Holidays. You must order before 1pm for your order to be sent to arrive the following working day. If you order after 1pm then your order will be shipped on the next working day.

Delivery Charges for Remote Areas
If your order contains JUST live worms and is under 2 kilos - whether that’s composting worms, wax worms or mealworms - you will have the option in the checkout to choose standard delivery at £4.95. This is because we can use Royal Mail for this service. Otherwise you will see the extra cost options for a courier to deliver your package. Please note there is no guaranteed next day service to these areas, so please allow extra time and track your package for information.

£10.95 Delivery Charge
For Falkirk, Aberdeen, Perth, Kirkwall, Paisley and Inverness areas (not islands), Isle of Man and Isle of Wight.
(Postcodes AB37-38, AB41-56, FK17-21, IV1-40, IV52-54, IV63, KW1-14, PA21-40, PA80, PH15-50, IM1-9, IM86-87, IM99, PO30-41)

£15.95 Delivery Charge
For Scottish Islands, Outer Hebrides, Kilmarnock area, Paisley area, Channel Islands and Northern Ireland.
(Postcodes HS1-9, IV41-56, KA27-28, KW15-17, PA20, PA41-78, PH42-44, ZE1-3, BT1-99, JE1-5, GY1-10)

Dispatch Information
All orders ship from Herefordshire, Monday to Friday (excluding bank holidays).

Questions?
For questions, email wiggly@wigglywigglers.co.uk.
Team Wiggly 🪱

At Wiggly Wigglers, it’s not just about sales (though we appreciate your orders and support for the farm!).

We’re here to offer a range of sustainable solutions that add fun to composting, boost biodiversity, and make bring your home and garden to life, whilst making the world just a little bit greener.

  • Trusted: We’ve been here for over 30 years, with over 100,000 orders shipped.
  • Try our products: We have a risk free 60 Day No Quibble Returns policy.
  • Great Value: Buy Direct - we grow, mix, pack and ship direct from our farm in Herefordshire.

We’re here to help. Check through our frequently asked questions, and feel free to email wiggly@wigglywigglers.co.uk or send a chat message if there’s anything we haven’t covered.

Available on loads of wiggly favourites! You will save up to 10%, and in the true spirit of Wigglyness there is no sign-up fee, no obligations, and you can cancel your subscription at any time with absolutely no hassle.

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What our customers say

Brilliant live worms and great service! I ordered a batch of live composting worms for my new wormery, and they arrived in perfect condition — lively, healthy, and ready to get to work straight away. The packaging was eco-friendly, and the team even included a little guide on how to settle them in. My kitchen scraps are disappearing fast, and I’ve already started harvesting my first bit of worm compost. Couldn’t be happier!
Sarah M.
Fantastic bokashi composting advice As a complete beginner to bokashi composting, I really appreciated how helpful the team were. They answered all my questions quickly and gave me simple, clear instructions to get started. The bokashi bran is top quality and smells fresh and pleasant. After just a few weeks, I’ve turned my kitchen waste into brilliant compost-ready material with no odour or mess. Highly recommended!
James T.
Top-notch British birdseed mix The British birdseed from Wigglys is superb. It attracts a lovely variety of garden birds — robins, finches, and even a pair of goldfinches have started visiting regularly. You can tell it’s a quality mix with no fillers or dust. Delivery was quick, and everything was packaged sustainably. It’s become my go-to source for bird feed!
Emma K.

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