Mites

Mites are tiny arachnids, not insects, that feed by piercing plant cells and removing contents, causing stippling, discolouration and reduced vigour. Common groups affecting Australian nursery, turf and landscape situations include spider mites (Tetranychidae), broad mites, rust mites and bryobia mites, each with slightly different host ranges and feeding habits.

Populations build rapidly in warm, dry weather, particularly over spring and summer, and can be worsened by dusty conditions or plant stress. Many species complete their life cycle in a matter of days under favourable temperatures, allowing numbers to escalate quickly if left unchecked. They are often found on the underside of leaves, in leaf axils, or within developing shoots and buds.

Management relies on regular monitoring, particularly during warm, dry periods, and maintaining plant health through appropriate irrigation to reduce moisture stress. Encouraging predatory mites and other beneficial arthropods, avoiding excessive nitrogen fertilisation, and reducing dust build-up around susceptible plantings can help limit outbreaks. Cultural controls and hygiene, such as removing heavily infested plant material, support broader integrated pest management strategies.