Rabbits are putting gin production under threat by over-grazing on a key ingredient – juniper berries.
Wild bunnies have been munching the bushes, whose berries give the drink its bitter taste.
Charity Plantlife said: “Juniper faces extinction across much of lowland England within 50 years.”
Berry Bros. & Rudd, the maker of No.3 London Dry Gin, has given £1,000 to a conservation group to fence in plants near Lancing, West Sussex, to keep them alive.
It said: “We’re hopeful of healthy days ahead.”
Juniper is one of only three native conifers and was one of the first trees to colonise Britain after the last Ice Age.
It has steadily declined over the last few decades and many counties in southern England have lost over 60 per cent of their juniper populations.