The Guernsey Trees for Life team is planting trees at the reservoir.
The charity is planting native and neutralised species, such as English oak, Hawthorn, Field maple and Crab apple, in the hope they will contribute to local wildlife.
It is all part of GTFL's 2022 planting programme, which has already seen the team plant saplings at Le Murier, La Houguette and Scouts HQ at Rue Mainguy.
The initiaive is being supported by Channel Island Fuels, which is donating to the charity for every litre of petrol sold at St Martins and Jeffrey's garages.
Anyone interested in volunteering to help plant trees, offering their land for tree planting or making a donation to the organisation can contact GTFL on gsytreesforlife@gmail.com.

New scheme teaches Guernsey families to cycle safely together
Water testing could identify new species in Guernsey
Guernsey by-election countdown
Muratti Tickets on now on sale
Channel Islands lifeboats launched 102 times in 2025
Tree protection order served on Guernsey landowner
Guernsey rejects inter-island ferry proposal
New housing development to support Guernsey residents with disabilities