Green-fingered islanders are being asked what makes their garden grow as part of plans that could reduce the need to import compost and artificial fertilisers.

Guernsey Waste has launched a survey to learn what products islanders are currently using in their gardens and gauge demand for locally produced compost. It is part of a review of the current processing of local green waste, to improve efficiency and ensure a secure and reliable output for the materials being produced.

Currently, around 12,000 tonnes of household and commercial green waste is collected each year. This is shredded at Mont Cuet and then composted for several months, so the material breaks down to produce a compost-like soil conditioner. That can currently be collected for free from Longue Hougue.

Guernsey Waste’s review is looking at potential improvements, including speeding up the processing of material while ensuring consistently high-quality output. It is hoped this can reduce demand for imported compost, fertilisers and other soil improvers. It could also offset some of the processing costs though the production of high-grade, certificated products suitable for use in domestic gardens and agricultural applications.

Guernsey Waste minimisation and sustainability officer, Douglas Button, said: “We are looking to improve the current operations, to ensure they work as efficiently as possible and deliver the maximum benefit to the island. The feedback from the survey will provide useful information to gauge what products islanders are currently using and the reasons behind their choices.

“So whether you’re a keen gardener, a frequent user of the green waste site, or simply interested in supporting more sustainable practices, we would like to hear from you.”

As well as households, commercial gardening firms are also invited to complete the survey.

Feedback is also being sought directly from local farmers.

A new drop off site for household garden waste was opened at Mont Cuet last year, which has provided a much improved facility for users, including longer summer opening hours.

The survey can be completed online at https://qrco.de/GuernseyBGreen. Printed copies are available on request from Guernsey Waste on 01481 221234.