How to Manage Pests
Pests in Gardens and Landscapes
Hairy root—Agrobacterium rhizogenes
The hairy root bacterium causes many small rootlets to form on swollen root tips. Plants may become stunted
and discolor. They eventually may die.
Purchase and plant only high-quality nursery stock. Avoid injuring trees during transplanting. Soil
solarization during the hot dry season before planting may reduce hairy root bacteria in the soil.
of root swollen with hairy root
and swollen root tips