How to Manage Pests
Pests in Gardens and Landscapes
Poor water management, poor drainage
Inappropriate watering commonly damages landscape plants. Inadequate water causes foliage to wilt, discolor,
and drop. Prolonged moisture and poor drainage results in smaller leaves, dieback or limb drop, and susceptibility
to root rots, mineral deficiencies or toxicities, wood-boring insects and other pests that eventually
can kill plants. Excessive moisture smothers and kills roots. As roots die, discolored and dying foliage
appears in the aboveground portion of the plant.
Maintain adequate but not excessive water in the soil to ensure plant survival and good growth. Examine
plants regularly for symptoms of water stress. Monitor soil moisture around the plant's root zone and adjust
irrigation according to seasonal need. Soil around young plants during hot weather may need to be monitored
daily; every few weeks may be adequate when monitoring around mature trees during more favorable weather.
Do not water established trees and shrubs near the trunk; this promotes root and crown disease. Water plants
when needed around the drip line and beyond. Adjust sprinklers or install deflectors to prevent wetting of
trunks. Move drip emitters away from the base of the trunk after plants are established.
dieback caused by lack of water
Do not overwater