Cut flowers

species and thousands of different cultivars. Hydrangea, or Hydrangea , has its origins in Asia and North and South America. Some species have developed into [...] Latin name for a bulbous plant that originates from Central and South America. It is a bulb plant from the large family of the Amaryllidaceae, the narcissus

Woolly apple aphid

apple pest. It is probably of North American origin and has been distributed to other parts of the world mainly via infested apple rootstocks. It can occasionally

Pea blight, leaf and pod spot

Ascochyta pisi hardly survives in the soil or on crop residues because of its poor saprophytic competitiveness and because chlamydospores are rare. Primary

Leaf stripe

this leads to the death of the leaf. The leaf splits at the end which makes it look shredded. This is typical for this disease. Infected plants may be stunted

Mealybugs and scales

defoliation. However, it is mainly the great quantity of honey-dew that causes the damage because of the sooty mould that grows on it. Ants are also attracted [...] attracted by the honeydew. In fact, the honeydew with its sooty mould is usually the first sign of the presence of this type of pest. Among ornamental crops

Citrus mealybug

task is to fertilize the females and as soon as a male emerges from its cocoon, it goes in search of a female. A fertilized female lays several hundreds [...] produce little wax, so that the light yellow to pink body is visible through its waxy covering. There is often a darker longitudinal stripe running over the

Cotton aphid

gossypii ) is distributed throughout the world but prefers the warmer regions. It has been a pest in European greenhouses since the late 1980’s, particularly [...] The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew

Tobacco aphid

The excess sugar is secreted in the form of honeydew, making the crop and its fruit sticky. Black fungal moulds ( Cladosporium spp.) grow on this honeydew [...] denser colonies, closer to the top of the plant, than the peach potato aphid . It is not known to what extent tobacco aphids ( Myzus persicae subsp. nicotianae

Fall Armyworm

is a polyphagous pest that is indigenous throughout the Americas. Recently, it has been found in Africa too. The caterpillars of fall armyworms feed on the [...] from seasonally dry habitats to wet habitats in Central America. This makes it possible for fall armyworms to spread over large areas rapidly. Adults fly

Glasshouse potato aphid

aphid (Aulacorthum solani) pierces the leaves or the fruit of sweet pepper it secretes a toxic substance, which leads to deformations in the growing tip [...] aphid is rather squat, of medium size (1.8 - 3.0 mm long) and oval in shape. It has a light yellow-green to brown-green colour, and has an overall shiny