Watering Recommendations

The goal of irrigation is to provide the soil (supporting your plants) with the optimum amount of water necessary for plant heath and vigor. Sounds simple, but several factors will influence the dynamic watering needs of your specific lawn and ornamentals. Soil depth, slope of your landscape, shade conditions, as well as the ever-changing temperature/seasonal conditions all play a role in determining how long and how often to water. Another major consideration is the type and nozzle size of the sprinkler heads used. (Spray heads emit 3 to 4 times more water than rotor heads per square foot.) The settings suggested below are general in nature. You will need to adjust settings according to your specific sprinkler system and landscape conditions.

March - April
Early spring irrigation-water one time per week with the following run times:

  • Rotor and impact heads :45
  • Spray heads :15
  • Drip irrigation :90
May - Mid-June
Late spring/early summer irrigation-water two times per week with the following run times:
  • Rotor and impact heads :60
  • Spray heads :20
  • Drip irrigation :90
Mid-June - Late August
Mid-summer irrigation-water two to three times per week with the following run times:
  • Rotor and impact heads 1:20
  • Spray heads :20
  • Drip irrigation :90 (if on separate program, conditions permitting, water one time per week for 4-6 hours)
Late August - October
Late summer/early fall-water two times per week with the following run times:
  • Rotor and impact heads :45
  • Spray heads :15
  • Drip irrigation :90

Deeply rooted trees and shrubs should be watered deeply and infrequently. One long watering cycle per week or every other week is ideal for established trees.

The ideal times of day to water are as follows:

  1. Early morning - minimizes evaporation but allows foliage to dry after watering.
  2. Evening/Night - minimizes evaporation. Not as ideal as morning as foliage stays wet longer.
  3. Mid-day - most evaporation, but can be beneficial when temperatures are extreme (cools surface temperature).