An annual common plants survey by Plantlife has revealed that last year at least one site in Pembrokeshire contained no common wild plants at all.

In addition, previous Plantlife research has shown that Pembrokeshire has lost 18% of its scarce plant species since 1970.

Launched on the first day of spring every year, Plantlife's annual survey of wild plants and flowers acts as an early warn ing system for the countryside.

The research helps the charity focus on where the greatest needs for conservation lie.

Pembrokeshire is one of the counties that had sites surveyed last year containing none of the 65 common wild plants that make up the common plants survey.

"Large parts of Pembrokeshire are under-recorded, so we're keen to hear from any Western Telegraph readers who'd like to take part and help us to spot trends quickly," said Sophie Thomas, from Plantlife.

Common plants and flowers have tended to be undervalued by conservationists in the past.

However, they play pivotal roles in ecosystems, providing both habitat and food for British wildlife.

Plantlife relies on volunteers who survey randomly picked sites for the 65 carefully chosen wild plants and flowers, which act as indicators to the health of natural habitats.