Wild Slow Worm Garden Welfare and Habitat

Slow worms are legless lizards that are valuable residents of gardens and allotments. Understanding their needs helps the public support these often misunderstood reptiles.

Key Facts

Slow worms (Anguis fragilis) are legless lizards, not snakes - they have eyelids and a different body plan
They are widespread in the UK and commonly found in gardens, allotments, and rough grassland
Slow worms are fully protected under the Wildlife and Countryside Act 1981
They feed on slugs, snails, and earthworms making them valuable garden allies
Females give birth to live young in late summer, with 6-12 offspring per litter
Slow worms hibernate from October to March under logs, stones, and in compost heaps
Cats, domestic and wild birds, and hedgehogs are significant predators of slow worms

Welfare Considerations

Slow worm welfare is closely tied to the management practices of the gardens and allotments they inhabit. Rotavating soil, strimming rough areas, and removing cover all cause slow worm mortality. Cat predation is significant - slow worms cannot move quickly and are easily caught. Creating suitable refugia - corrugated iron sheets, flat stones, and log piles - provides safe basking and hiding habitat. Checking compost heaps before turning and strimming carefully in known slow worm areas prevents accidental mortality. Their value as slug predators makes slow worm welfare a practical benefit to gardeners as well as an ethical obligation.

What You Can Do

Create slow worm refugia in your garden using sheets of corrugated iron or flat roofing felt
Check compost heaps and rough areas for slow worms before strimming or digging
Fit cats with bell collars during the slow worm active season to reduce predation
Avoid using slug pellets which reduce slow worm prey and may cause secondary poisoning
Report slow worm sightings to ARG UK and the National Biodiversity Network for monitoring