Wild Slow Worm Garden Habitat Conservation

The slow worm is Britain's only legless lizard and a common garden resident whose welfare depends on the provision of refugia and freedom from persecution.

Key Facts

Slow worms are not snakes but legless lizards, distinguished by their ability to blink (snakes cannot) and their smooth, shiny scales.
They are entirely beneficial to gardeners, feeding on slugs, worms, and other invertebrates - yet are frequently killed due to misidentification as snakes.
Slow worms require warm refugia under flat objects such as corrugated iron sheets, paving slabs, or log piles for thermoregulation and shelter.
Female slow worms give birth to live young rather than laying eggs, and litters of 6-12 young are common in late summer.
Slow worms are fully protected in the UK under the Wildlife and Countryside Act 1981.

Welfare Considerations

Slow worm welfare is primarily threatened by accidental harm during garden clearance and deliberate persecution through fear or misidentification. Garden strimmers cause severe injuries or death to slow worms sheltering in vegetation, particularly in spring when females may be gravid. The provision of artificial refugia - pieces of corrugated metal, roofing felt, or wooden boards - creates monitoring and basking sites that are also useful for gardeners wanting to check on local populations. Education about slow worm identification and ecology is the most effective welfare intervention, transforming potential persecution into appreciation for a valuable garden ally.

What You Can Do

Place refugia such as corrugated iron sheets or wooden boards in sheltered garden spots.
Check ground cover carefully before strimming or clearing vegetation.
Never harm slow worms found in gardens - they are legally protected and ecologically valuable.
Participate in slow worm recording through local reptile groups and national surveys.