Phytophthora fragariae

red stele root rot

Phytophthora fragariae var. oryzobladis

Africa: Egypt; Asia: India, Israel, Japan, Lebanon, Syria; Europe: Austria, Belgium, Cyprus, Denmark, Finland, France, Germany, Ireland, Italy, Lithuania, Luzembourg, Netherlands, Norway, Russia, Serbia, Slovakia, Switzerland, UK; North America: Canada, Mexico, USA; Oceania: Australia, New Zealand; south America: Chile, Ecuador

AR, CA, CO, CT, DE, FL, IL, IN, IA, KY, ME, MD, MA, MI, NH, NY, NC, OH, OK, OR, PA, RI, TN, VT, VI, WA, WV, WI

2025-09-09

fungus

China

Main: strawberry, raspberry

PHYTFR

Phytophthora fragariae is a serious disease of strawberry causing red stele root rot. It primarily infects the root system, which impairs water and nutrient uptake. The pathogen survives in soil for many years and is favored by cool, wet conditions. Its main natural host is cultivated strawberry, though a few related plants in the Rosaceae family can also be susceptible. It is not known to cause disease in unrelated crops.