Phyllocoptruta oleivora

What are Citrus Rust Mites? 

Citrus rust mite feeds on the outer exposed surface of the fruit, causing damage to the rind. Fruit blemish occurs from infestation by huge numbers of mites on green, immature fruit in summer/autumn.

 

Symptoms

Affected fruit has rough, sandpaper-textured, silver, reddish-brown or black blemishes, with darker outer edges. The damage tends to be silvery on lemons and grapefruit, and rusty brown on oranges. Blemishes show up prominently when the fruit colours and becomes more severe the longer the fruit remains on the tree.

Rust mites can also cause bronzing of leaves and green twigs.

 

Plants impacted

  • Citrus Trees

Risk periods

  • Summer
  • Autumn

Recommended products


More articles

Scale Insects

Scale insects spend most of their lives immobile, sucking sap from stems and leaves. They vary a lot in appearance: some hide under a hard scaly shield, some exude soft waxy or cottony coatings.

Sunburn

Damage can be caused by excessive exposure to sunlight. Hot, dry weather can dehydrate plants, which aggravates the effects of harsh sun. Positioning plants in full afternoon sun, along with poor fertility soil, can make the issue worse.

Rust

Rust fungus is easily identified by the multitudes of orange or red pustules on leaves or stems, that break open and release masses of spores.