Biological Pest Control: Nematodes As A Chemical-Free Option

Fish are worth thinking through carefully. Ornamental fish will happily eat frogspawn and tadpoles, so a pond intended mainly for amphibians is usually better left fish-free. Leaving some leaf litter to settle at the bottom over autumn also gives amphibians a place to shelter through the colder months.

Design has a big influence on how well a pond gets used. A shallow, gently sloping edge, sometimes called a beach area, www.gardenwildlife.com lets amphibians and insects get in and out easily, and gives small mammals that fall in an escape route rather than a hazard. Planting in distinct zones, marginal plants at the shallow edge, floating plants across the surface, and oxygenating plants below, gives different creatures the cover and conditions they need.

Access is usually the first barrier. Solid fencing and walled boundaries cut a garden off from the wider network a hedgehog relies on. A gap roughly the size of a CD case cut at the base of a fence panel, sometimes called a hedgehog highway, lets them pass between neighbouring gardens without needing to cross open roads or driveways.

Nematodes are microscopic roundworms that occur naturally in soil, and certain species have been developed for 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.

Connectivity between gardens is often the missing piece. A small gap at the base of a fence, native hedging used in place of a solid boundary where practical, and less hard paving all help animals move between plots rather than being boxed into one. These small changes add up meaningfully over the course of a season.

Stocking the pond with the right planting from the start makes a noticeable difference to how quickly it settles. A good place to begin is a considered selection of pond plants suited to the pond's size and depth.