Biological Pest Control: Nematodes As A Chemical-Free Option

Whole peanuts should be avoided if fledglings are likely to be fed them directly, as they present a choking risk; a mesh feeder that breaks nuts into smaller pieces is the safer option. Hygiene is just as important as food choice: cleaning feeders regularly and moving their position from time to time helps reduce the build-up of bacteria that can spread between visiting birds.

Frogs and newts are useful garden residents, feeding on slugs and other insects, and their presence is generally a good sign that a pond is in reasonable health. Attracting them is mostly a matter of getting the habitat right rather than anything more involved.

Nematodes are microscopic roundworms that occur naturally in soil, and certain species have been developed water features for garden ponds use against specific garden pests. Rather than acting as a broad chemical treatment, each nematode species is matched to a particular pest, seeking it out and interrupting its lifecycle with far less impact on the rest of the garden than a chemical spray.

Bees and other pollinating insects rely on gardens for a large share of their food, especially in built-up areas where wildflower meadows are scarce. A garden that offers flowers from early spring right through to autumn does far more for pollinators than one with a single showy burst of colour in June.

Not every beneficial garden insect lives in a hive or a colony. Many UK bee species are solitary, nesting alone or in loose aggregations, and insects such as lacewings and ladybirds shelter individually or in small clusters, particularly over winter. An insect house gives these species something a tidy garden often lacks: safe, undisturbed nesting and overwintering space.

Food choice should shift with the seasons. High-fat foods such as fat balls and suet blocks suit the colder months, when birds need extra energy to maintain body heat. During the breeding season, softer foods and mealworms are more useful, since adult birds feed these to chicks that cannot yet manage tougher foods. Sunflower hearts work well year round and avoid the mess of husks left by whole sunflower seeds.