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.
Placement decides whether the house gets used at all. A fixed position at around waist to head height, facing south or south-east to catch the morning sun, and sheltered from driving rain and strong wind, gives insects the stable conditions they need. Once occupied, the house is best left undisturbed through the nesting and overwintering period.
Application is simple but does depend on getting the conditions right. Nematodes are typically mixed with water and applied with a watering can or hose-end feeder directly onto moist soil, since they need moisture to move through it and reach their target. Soil temperature also matters: most products need the soil to be above a minimum threshold,
http://www.fairviewumc.church/bbs/board.php?bo_table=free&wr_id=3667519 often around 5°C, to remain effective.
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.
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.
Sited well and left in peace, an insect house can become a genuinely busy part of the garden. Many gardeners start by comparing a few insect houses before choosing one to match the space available.
