Green Johanna Winter Jacket – Keep Your Compost Hot All Year Round

  • Green Johanna Winter Jacket
  • Green Johanna Winter Jacket
  • Green Johanna Winter Jacket
  • Green Johanna Winter Jacket
  • Green Johanna Winter Jacket
  • Green Johanna Winter Jacket
1 6
£80
£80
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Green Friday Weekend - 12% off all (non-subscription) orders with code WIGGLY12 at checkout!

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Give your Green Johanna Hot Composter the protection it deserves through the colder months with the official Winter Jacket – a durable, insulating cover that keeps composting microbes warm, active, and working even when the air turns frosty.

Designed specifically to fit the 330 L Green Johanna, this snug, weather-resistant jacket helps maintain internal temperatures of 40–70 °C, ensuring efficient hot composting all winter long.

Perfect for UK gardens, it extends your composting season and guarantees the Johanna performs at its best, no matter the weather.

Key Benefits

🌡️ Keeps Compost Hot in Cold Weather: Insulates your Green Johanna to maintain optimal microbial activity.
🪱 All-Year Composting: Prevents the internal temperature dropping below the composting threshold (≈ 40 °C), so your heap keeps working right through winter.
💨 Speeds Decomposition: Sustained warmth means faster breakdown of organic waste, even when outdoor temperatures fall below freezing.
🧥 Easy to Fit & Remove: Lightweight, flexible panels zip securely around the composter and lift off for cleaning or storage.
🌦️ Durable & Weather-Resistant: Made from long-lasting, waterproof material that stands up to repeated winters.

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  1. Fit When Needed: Add the jacket when average outdoor temperatures stay below 5 °C for several days.
  2. Secure the Fit: Wrap the panels evenly around the composter, aligning zips and fastening snugly.
  3. Monitor Ventilation: Keep the lid vent slightly open to maintain airflow while retaining warmth.
  4. Remove in Spring: Take off the jacket once outdoor temperatures consistently rise above 10 °C.
  5. Store Clean and Dry: After removal, wipe down and store flat or rolled in a dry place ready for next winter.

Wiggly Tip: Combine your Winter Jacket with Complete Rot and Bokashi-fermented waste for an unbeatable all-season composting system. The microbes from Bokashi and the insulation from the jacket keep your compost hot, active, and odour-free.

At Lower Blakemere Farm in Herefordshire, we know composting doesn’t stop for the seasons — and neither should you.
Adding insulation to our compost systems helps maintain biological activity throughout winter, cutting methane emissions and keeping nutrients cycling back into our soil.
The Winter Jacket lets you do exactly the same at home: compost continuously, reduce waste, and feed your garden soil all year long.

🔥 Thermophilic Microbes: Stay active above 40 °C, turning waste into rich compost.
🧫 Pathogen Control: Sustained heat kills harmful bacteria and weed seeds.
💧 Balanced Moisture: Prevents condensation from freezing and maintains aerobic conditions.
♻️ Faster Results: Even in January, decomposition can continue without pause.
🌍 Lower Emissions: Hot composting releases CO₂ instead of methane — a major win for the planet.

✅ Add waste in smaller, frequent batches to keep microbes fed.
✅ Stir gently with the aerator stick weekly to circulate oxygen.
✅ Avoid adding large, cold loads of grass or wet material all at once.
✅ Keep the lid twisted to a semi-closed position to trap heat.
✅ If using Bokashi waste, layer it with dry browns like shredded paper or straw for perfect balance.

Product Specs

  • Material: Weather-resistant, insulated fabric
  • Fits: 330 L Green Johanna Hot Composter
  • Temperature Range: Recommended below 5 °C; remove above 10 °C
  • Fitting: Easy-fit, zip fastening
  • Care: Wipe clean; store dry when not in use
  • Origin: Made in Sweden / distributed in the UK
  • Delivery: Shipped directly from supplier (5 working days; next-day not available)

Goes Well With

🔥 Green Johanna Hot Composter (Standard or Complete Rot Bundle) – the perfect match for continuous composting.
⚡ Complete Rot – balances nitrogen and speeds up grass and kitchen waste decomposition.
🌿 Bokashi Organko Kit – pre-ferment kitchen waste indoors before adding to your Johanna.
🪱 Worm Treat – boosts microbial activity and helps balance moisture.

FAQs

Q: When should I fit the Winter Jacket?
A: Fit it once average outdoor temperatures stay below 5 °C for several days.

Q: When should I remove it?
A: When outdoor temperatures consistently stay above 10 °C.

Q: Does the jacket stop airflow?
A: No — it’s designed to insulate while still allowing the Johanna’s ventilation system to work effectively.

Q: Will it make compost faster?
A: Yes. By maintaining thermophilic temperatures, it keeps microbes active, reducing the time needed for complete breakdown.

Q: Can I leave it on all year?
A: It’s best used only in cold conditions to prevent overheating in summer.

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🌱 From Dirt to Living Soil

We’re regenerating our farm from the roots up. Every order you place helps bring back healthy soil, thriving wildlife, and renewed hope.

👉 Follow our journey ➜

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.

Wiggly Wigglers 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 3pm for your order to be sent to arrive the following working day. If you order after 3pm 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.

For Falkirk, Aberdeen Perth Kirkwall Paisley and Inverness Areas (not islands), Isle of Man and Isle of Wight the charge is £10.95

(Postcodes AB37-38 AB41-56 FK 17-21 IV1- 40 IV52-54 IV63 KW1-14 PA21-40 PA80 PH15-50 IM1-9 IM86-87 IM99 PO30-41)

For Scottish Islands, Outer Hebrides, Kilmarnock area, Paisley area, Chanel Islands and Northern Ireland the charge is £15.95

(Postcodes HS1-9 IV41-56 KA27-28 KW15-17 PA20 PA41-78 PH42-44 ZE1-3 BT1-99 JE1-5 GY1-10)

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

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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