Composting tips, advice and science.

Compost News

From growing cabbages in poo to the secrets of effective home composting, we cover both the most interesting (and sometimes pretty weird!) and useful news for composters.

Tractor moving compost.

Herbicide Contamination in Compost: Risks, Research, Solutions

15th March, 2025 If you’ve made compost from materials outside your garden, and nothing has grown in it, the problem could well be due to a hidden herbicide.  While most traditional herbicides do break down in compost, there’s a new breed of herbicide which is far slower to do so.  Contaminated manure has caused headaches […]

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Ai image of compost being added to a raised bed with Aragula being grown.

Scientists Report: Vermicompost Grows Plants 38% Taller

Scientists have discovered that applying relatively small amounts of vermicompost can improve germination rates, plant size, and growth speed—and there are some great lessons for gardeners buried in their study. The scientists experimented with the impact of the Californian compost worm, Eisenia andrei Bouche, on arugula plants. First, they created vermicompost over eight months, using

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Peat free compost pictured in greenhouse.

Many Peat-Free Composts Don’t Make the Grade Says Research Facility

12th Feb 2025 New research has shown that many bagged peat-free composts struggle to produce good results. The research was conducted at the UK’s Stockbridge Technology Centre (STC), an independent agricultural and horticultural center of excellence. The researchers bought bagged compost from a variety of sources, including online retailers, garden centers, and DIY stores. To

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Applying compost to a vegetable garden.

Study Confirms Surface-Applied Compost Outshines Traditional Methods

28/01/24 A new study from the Czech Republic has reinforced the remarkable benefits of surface-applied compost on soil health.  Unlike traditional methods that involve tilling compost into the soil, this approach reinforces known benefits by applying stable, mature compost directly to the surface—a method that has shown significant improvements in soil properties over just two

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Retrieving compost from a compost bin.

Study Finds One Key Ingredient for Faster, Better Compost

01/25/2025 Bulking agents are essential for successful composting. They create air pockets to help oxygen-loving bacteria thrive, absorb excess moisture, and improve the structure of dense, wet material. Without them, composting can be slow and inefficient. Now a new study published in Nature.com has identified the best bulking agent for home composting – and it’s

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Azteca ants on a Cecropia tree.

The Secret Compost Masters of the Tropics: Azteca Ants and Cecropia Trees

In the dense, buzzing rainforests of Central and South America, an extraordinary story of mutual survival is unfolding in the canopies. Meet the Azteca ants and their Cecropia tree hosts—partners in one of nature’s most fascinating composting systems. A partnership built over millenia The Azteca-Cecropia relationship is a relationship that has developed over millions of

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