The United Kingdom has experienced a severe decline in wildlife over recent decades: according to the State of Nature report, 41 percent of UK species have declined in abundance since 1970, with many formerly common species now at risk. Gardens — covering approximately 400,000 hectares across the UK, more land than all the National Nature Reserves combined — represent one of the most significant opportunities for individual action in support of wildlife conservation.
Creating a wildlife-friendly garden does not require surrendering all order or aesthetic appeal: some of the most beautiful gardens in Britain are also highly productive habitats. The changes required range from the trivially simple (leaving a small area of lawn to grow long) to the more involved (installing a pond), but all are achievable in gardens of any size, including small urban plots.
Why Gardens Matter for Wildlife
Urban and suburban gardens provide habitat, food and connectivity corridors for a remarkable diversity of species. A wildlife-friendly garden with a pond, diverse planting, log piles and bird feeding stations can support hundreds of invertebrate species, dozens of bird species, several mammal species, and — in the right location — amphibians and reptiles. The cumulative effect of many gardens making even modest changes toward wildlife-friendliness creates significant areas of connected habitat at the landscape scale.
The Single Most Impactful Action: A Pond
If a garden can accommodate only one change for wildlife, a pond is the most impactful option available. Ponds support more biodiversity per square metre than almost any other garden feature. Even a small pond — a barrel pond or a dug pond one metre across — will attract breeding frogs and toads within the first season if it is in reasonable proximity to other water bodies. Dragonflies and damselflies, water beetles, water boatmen and many other invertebrates colonise garden ponds surprisingly quickly. Frogs and toads consume large quantities of slugs, making a pond valuable for vegetable gardeners as well as conservationists. The key requirements for a wildlife pond are: no pumps or fish (both are incompatible with the amphibians and invertebrates you want to attract), gentle sloping sides so animals can enter and exit safely, and a diversity of aquatic and marginal plants.
Let Some Grass Grow Long
Closely mown lawns provide almost no habitat for wildlife. Allowing a section of lawn to grow longer — even a strip along a fence line or a patch in a corner — creates habitat for a significant diversity of invertebrates and the birds and mammals that feed on them. Long grass harbours grasshoppers, beetles, spiders, and many caterpillar species. If the patch is large enough and the right wildflower species are present, it may support bumblebees and other pollinators. The management requirement is simple: cut the long-grass area once a year in late summer or autumn, allowing the cuttings to dry for a few days before removing them (to avoid fertilising the ground and encouraging coarse grass over wildflowers).
Plant for Pollinators
The decline of pollinating insects — bumblebees, solitary bees, hoverflies, butterflies and moths — is one of the most significant ecological changes in recent British landscapes, with implications for food production as well as biodiversity. Gardens can contribute meaningfully to pollinator conservation through planting choices. Pollinator-friendly plants flower over a long season (avoiding the early spring and late autumn "hungry gaps"), provide accessible pollen and nectar (avoiding highly bred double flowers where petals have replaced reproductive structures), and avoid insecticide treatments. Excellent pollinator plants for British gardens include lavender, borage, alliums, foxgloves, teasels, verbena bonariensis, native wildflowers including knapweed and bird's-foot trefoil, and traditional cottage garden plants including campanulas and achilleas.
Provide Shelter: Hedgehogs, Birds and Insects
Hedgehogs have declined by approximately 50 percent in UK gardens over the past 20 years, driven by loss of habitat, road mortality, and the increasing impenetrability of garden boundaries. The most impactful garden action for hedgehog conservation is creating a 13cm x 13cm hole in the base of garden fences and walls to allow hedgehogs to pass through (hedgehogs have territories of up to two kilometres and need to be able to move through many gardens on a single night's foraging). Registering your garden at the Big Hedgehog Map and connecting with neighbours to create a "hedgehog highway" through multiple gardens amplifies the benefit considerably. Log piles and leaf piles in quiet corners provide hibernation sites for hedgehogs and habitat for the beetles, centipedes and other invertebrates they feed on.
Bird-Friendly Gardens
Garden birds are among the most visible wildlife in British gardens and the easiest to attract and support. Year-round feeding — with high-energy seed mixes, fat balls, and peanuts in appropriate feeders, positioned safely from cats — supports local bird populations and provides consistent opportunities to observe them. Nesting boxes, installed in appropriate positions (the RSPB provides detailed guidance on placement and hole size for different species on its website), provide scarce nesting sites in gardens with few mature trees. Avoiding pesticides preserves the caterpillars, aphids, beetles and other invertebrates that garden birds depend on to feed their chicks — a pair of blue tits feeds their nestlings approximately 10,000 caterpillars during the breeding season.
Native Plants: The Foundation of Garden Ecology
Native British plants — those that have evolved alongside British wildlife over thousands of years — support dramatically more wildlife than introduced ornamentals. An oak tree supports over 280 species of invertebrate; a horse chestnut, introduced from the Balkans, supports around 4. Native hawthorn, blackthorn, dog rose, and elder provide food for dozens of invertebrate species and critical berries for autumn migrants and wintering birds. Even in a small garden, replacing a section of ornamental shrubs with native species, or allowing a patch of native nettles (the primary food plant of red admiral, small tortoiseshell, peacock and comma butterfly caterpillars) in an inconspicuous corner, meaningfully increases the garden's ecological value.
"A wildlife-friendly garden is not an untidy garden. It is a thoughtfully managed garden that includes the features, plants and patches that other species need to survive. Beauty and biodiversity are not opposites."
Start with the changes that require the least resource and effort: stop using pesticides and herbicides, allow a patch of grass to grow long, plant some pollinator-friendly flowers in pots if you have no borders, and make a hole in your fence for hedgehogs. Each change, however small, contributes to the connected web of urban habitat that gives British wildlife its best chance of adapting to an environment that has changed dramatically over the past century.