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Welwyn Hatfield Borough Council

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Garden waste

Information on how you can compost, what happens during the process and handy tips for successful home composting.

Leaf picture Facts and figures

Why compost?                  

How can I compost?

Kerbside collections - The council collect garden waste for composting fortnightly. To take part you will need to have a brown wheelie bin provided by the council or buy compostable garden waste sacks. For more guidance on this service, please see our recycling services page.                                          

From an environmental position, home composting is the best option for dealing with garden waste and some other organic materials. Composting allows us to manage this waste where it is generated, with very little environmental impact. It also enables organic material to be returned to the environment in the form of a soil improver. Composting at home reduces the overall amount of waste that requires collection, transportation and management, saving energy. Home composters are available through Hertfordshire County Council at a discounted price (from as little as £14.00). For more information download the online order form, visit WasteAware or telephone the WasteAware helpline on 08457 425000.

Alternatively you can take your garden waste to any of Hertfordshire’s Household Waste Recycling Centres (HWRCs). Here the waste is shredded and composted to produce soil improver and this is available for purchase from the sites at £2.90 for a 40 litre bag. Hertfordshire County Council makes a charge to cover the cost of bagging and transportation.

The composting process    

Compost forms when organic material (that from living animals and plants) is broken down in the presence of oxygen. There are two main stages:                  

  1. Bacteria, fungi and micro-organisms (‘heaters’) breakdown the softer material e.g. leaves. The compost heap heats up to over 60°C as the organisms get to work and decompose the organic matter to produce humus;
  2. Next the cooling of the compost heap allows worms, insects and other small creatures (‘chompers’) to break down the tougher material. As the chompers work, they mix together the humus and soil to produce natural soil improver.

Compost usually takes about 3-9 months to mature and it should be taken from the bottom of the heap, allowing the partially composted and newer material to remain. 

Composting at home

Home composting advice                         

Your composter should be placed somewhere sunny because its warmth will speed up the composting process. Also, composters should be positioned on bare, well-drained soil or grass to enable the ‘chompers’ access to the material and allow drainage. The following list gives you an idea of what you should and shouldn't compost.

Yes please

No thanksTo speed up your home composter
Grass cuttingsTurf or soil

Chop or shred tough stems or prunings.

Plants and weedsPersistent weeds (such as ragwort)Turn the heap occasionally or add a little crumpled newspaper.
Hedge clippingsMeat, bones and fishKeep it moist - add a little water in hot weather if necessary.
Woody pruningsDairy productsAdd large amounts of mixed material at a time - a good mix is essential.
FlowersCooked foods
Leaves and barkNappies or sanitary products
Crushed eggshellsPet litter or dog/cats mess
Raw vegetables and fruitShiny paper
Tea leaves and coffee grounds
Shredded paper/soft card 
Hair and fur  
Chopped straw and hay  

Garden waste picture For more information                  

The HDRA website is specifically aimed at schools who compost.                  
The Community Compost Network's site is also packed with lots of information.
Lastly, Waste Online provides information on most wastes, including a good composting section.                 

Environment