Lawns

Walla Walla County Easy Lawn Care Calendar

• December and January
  • Avoid piling snow on turf areas. Stay off frozen grass.
• February
  • Stay off muddy grass areas. When not muddy, gently rake lawn to remove debris. Annual grass pre-emergent weed control (or early March)
• March
  • Mow (0-2 times per month). Dethatch and aerate if needed.
• April
  • Mow (4 times  per month)
• May
  • Mow (4-6 times per month). Fertilize. Broad leaf weed control
• June – August
  • Mow (4-6 time per month).
• September
  • Mow (4 times per month). Fertilize. Broad leaf weed control.
• October
  • Mow (2-3 times per month). Fertilize

To remember when to fertilize your lawn, think of holidays: Memorial Day, Fourth of July, Labor Day, and Halloween.  The N:P:K ratio of 3:1:2 is recommended and be sure it contains some slow release nitrogen. If you only fertilize once a year, fall is the most important time.

Lawn Care Resources

• Home Lawns
• Lawn Watering
• Saving Water: Lawns and Other Turf
• Lawn Renovation, Overseeding
• Thatch in Home Lawns
• Lawn Care Tips

Program Contact

Amy Rosenberg, Extension Coordinator
Phone Number509-524-2685 Email Address • amy.rosenberg@wsu.edu