Efallai mai’r arwydd cyntaf bod y gwanwyn ar ddod ydi’r eirlys yn gwthio’i ffordd drwy bridd barugog coetir, mynwent neu ardd. O fis Ionawr ymlaen, cadwch lygad am ei blodau gwylaidd, gwyn enwog…

The long-winged conehead is so-named for the angled shape of its head. It can be found in grasslands, heaths and woodland rides throughout summer.

Cock's-foot is a common, tussocky grass of grasslands, woodland rides and cultivated ground - its fluffy, pinky-beige flower heads are quite distinctive.

The ragged-edged, purple flower heads of Greater knapweed bloom on sunny chalk grasslands and clifftops, and along woodland rides. They attract clouds of butterflies.

The green hairstreak is the UK's only green butterfly. Look out for the vibrant, metallic sheen of the undersides of its wings on grassland and moorland, and along woodland rides.

The pearl-bordered fritillary is a striking orange-and-black butterfly of sunny woodland rides and clearings. It gets its name from the row of 'pearls' on the underside of its hindwings…