Where does it occur? 

The World

There are over 60 species of Phytophthora that occur worldwide. The destructive power of this genus of plant pathogens first came to light with the decimation of the potato crops in Ireland by Phytophthora infestans during the potato famine in the 1840's. Today there are a number of Phytophthora species causing disease epidemics in different continent's around the world.

Phytophthora cinnamomi or Phytophthora d ieback is arguably the most destructive and widespread of all the Phytophthora species. It has been voted as one of the top 100 most destructive invasive species worldwide. The disease was first described by Rands in 1922 in Sumatra as the cause of stripe canker in cinnamon trees. Today, the disease has been reported to occur in over 70 countries from around the world, including Europe, Africa, North America, Central America, South America, Asia and Australia (shown on map below in red).