Cookies on Plantwise Knowledge Bank

Like most websites we use cookies. This is to ensure that we give you the best experience possible.


Continuing to use means you agree to our use of cookies. If you would like to, you can learn more about the cookies we use.

Plantwise Knowledge Bank

Your search results

Species Page

almond scab

Venturia carpophila


You can pan and zoom the map
Save map

Host plants / species affected

Main hosts

show all species affected
Prunus (stone fruit)
Prunus persica (peach)
Prunus salicina (Japanese plum)

List of symptoms / signs

Fruit - gummosis
Fruit - lesions: black or brown
Fruit - malformed skin
Leaves - abnormal leaf fall
Leaves - necrotic areas
Stems - canker on woody stem


In peach (Prunus persica), the conidial stage of the fungus attacks fruit, causing small, circular, olive to brown spots on its surface. These coalesce, forming large, dark-brown areas and hindering normal fruit development. The infected skin cracks and becomes distorted, seeping gum. The fruit is unmarketable as it ripens unevenly, has a thick skin and poor flavour. Lesions may form on the underside of leaves and along the midrib. Small, brown, raised lesions appear on twigs and shoots, which may have a slightly raised purple margin (Sivanesan, 1974; Diekmann and Putter, 1996).

On almond (Prunus dulcis), spots develop on the hulls and leaves, which can cause premature defoliation (Connell, 2002).