Powdery Mildew

Powdery Mildew

Powdery mildew is a common disease infecting a wide range of plants, covering leaves with a dense, greyish powde...

Mites

Mites

Spider mites are very tiny, usually red, bugs that damage leaves causing yellow speckles.

Black Spot

Black Spot

Black spot is a common fungal disease causing dark brown to black leaf spots on the upper surfaces.

Lichen

Lichen

Lichens grow on hard surfaces such as trees, paths, drives and rocks. They are not plants but are symbiotic comb...

Rust

Rust

Rust is a general term for a large family of fungi that cause discoloured and distorted leaves.

Spider Mites

Spider Mites

Spider mites are very tiny, usually red, bugs that damage leaves causing yellow speckles.

Brown Rot

Brown Rot

Brown rot is a fungal disease that infects stone fruit trees.

Lichen Marks

Lichen Marks

Kill and remove lichen from outdoor surfaces such as driveways, paths, walls and stone.

Citrus Scab Verrucosis

Citrus Scab Verrucosis

Citrus scab Verrucosis is a disease of citrus affecting leaves and fruit.

Witches Broom

Witches Broom

Witches' broom disease is a condition found in many shrubs and trees. The affected plants form dense tufts of st...

Moss

Moss

Growth of moss is usually associated with poor drainage, shade, low nutrient level and/or acidic soil.

Septoria

Septoria

Septoria are fungi that cause many leaf spot diseases of garden plants.

Sulphur Deficiency

Sulphur Deficiency

Sulphur is an essential nutrient for healthy plant growth. Like calcium, sulphur is not easily mobile within pla...

Leaf Spot

Leaf Spot

Leaf spot diseases are common on vegetables, bedding plants, fruit trees and ornamentals.

Clover Mites

Clover Mites

Red clover mites are often found crawling up the exterior surfaces of houses and other buildings. They are usual...

Peach Leaf Curl

Peach Leaf Curl

Peach leaf curl is a common disease of peaches, nectarines and plums.

Bacterial Spot

Bacterial Spot

Bacterial spot is a group of diseases caused by bacteria and producing angular spots on leaves and fruit.

Sooty Mould

Sooty Mould

Sooty mould is a fungal disease often associated with sap sucking insects. It grows on the sweet honeydew that s...

Pear Leaf Blister Mite

Pear Leaf Blister Mite

Pear and other garden plants can be affected by Eriophyid mites. These mites cause blistering of pear leaves and...

Needle Blight

Needle Blight

Needle blight is a disease that usually affects pine trees, killing off the tip of the needles and branch tips.

Bacterial Blast - Canker

Bacterial Blast - Canker

Bacterial blast is also known as gummosis and bacterial canker. It can seriously damage and kill fruit trees suc...

Botrytis

Botrytis

Botrytis is fungal disease of ripe soft fruits including grapes, strawberries and tomatoes.

Camellia Flower Blight

Camellia Flower Blight

In the 1990s a camillia flower blight arrived in New Zealand. As its name suggests, camellia flower (or petal) b...

Bacterial Diseases

Bacterial Diseases

Bacterial diseases of plants are not as common as fungal diseases but they can cause dramatic leaf spotting a st...

Blight

Blight

Blight is a symptom caused by fungal and bacterial diseases that infect plants. Shoots and leaves quickly brown ...

Leaf Curl

Leaf Curl

Leaf curl a fungal disease that infects young leaves making them swollen, thickened and distorted.