PSU Tree Fruit Doctor
@drtreefruit.bsky.social
Penn State Tree Fruit Pathology Program: disease updates/factoids/awesome pathogen pictures/misc stuff/Dr. Tree Fruit and Don Podcast: https://extension.psu.edu/drtreefruit
PSU Extension Tree Fruit: https://extension.psu.edu/forage-and-food-crops/fruit
PSU Extension Tree Fruit: https://extension.psu.edu/forage-and-food-crops/fruit
When apple blossoms are open, there is a risk of the bacterial disease fire blight. Average temps 60 F + favor the bacteria in the flower to grow...watch out for wetting events like rain and heavy dew = this washes the bacteria from the stigma into the nectaries = disease occurs. Stay alert!
April 18, 2025 at 2:45 PM
When apple blossoms are open, there is a risk of the bacterial disease fire blight. Average temps 60 F + favor the bacteria in the flower to grow...watch out for wetting events like rain and heavy dew = this washes the bacteria from the stigma into the nectaries = disease occurs. Stay alert!