Tri-Cities · Lawn fertilization
Lawn fertilization in the Tri-Cities
Grass needs the right nutrients, in the right amounts, at the right time. Colonial has run fertilization programs across Richland, Kennewick and Pasco since 1985.
What each nutrient does for the grass
A well-watered, regularly mowed lawn can still thin out, fade and lose ground to weeds if the soil is short on food. Most residential lawns in the Tri-Cities do not have enough of these three nutrients available on their own.
Nitrogen
drives green color and leaf growth.
Phosphorus
supports root development and helps grass anchor in the soil.
Potassium
builds resilience to heat, drought and foot traffic.
Timing and amount decide the result
The product is only part of it. Fertilizer put down at the wrong point in the growing cycle works poorly and can harm the lawn, and too much stresses or burns the grass. Results come from the correct amount, at the correct time, based on the lawn's current condition, soil health and water.
Colonial technicians check what each lawn needs instead of treating every property the same. That is the difference between a program and a bag from the hardware store.
Why fertilizer comes with weed and grub control
Weeds compete with fertilized grass for nutrients, water and sunlight, and grubs chew the roots that fertilizer is trying to strengthen. Our Lawn Care Program pairs feeding with pre-emergent and post-emergent weed control and grub management so the three work together.
A thick, well-fed lawn crowds weeds out on its own, and targeted treatments handle crabgrass, goathead, spurge, oxalis, dandelions, bindweed and clover that still push through.
Thicker turf
dense grass leaves weeds less room to start.
Stronger roots
deeper roots ride out heat and dry spells better.
Steadier color
consistent feeding avoids a green flush followed by a fade.
The program and your questions
The Premium program is six applications and six inspections from a licensed technician. Economy is the first four applications, for homeowners who want fertilization and weed control on a shorter schedule. Colonial uses EPA-approved materials, and children and pets can return once the application has dried.
Can too much fertilizer hurt my lawn?
Yes. Over-fertilizing can burn or stress grass and create new problems, which is why the amount is measured.
Is fertilization all you offer?
No. It is part of the broader Lawn Care Program, alongside mowing, aeration, sprinklers and pest control.
Why not do it myself?
Timing errors, wrong amounts and missed weed or grub damage all reduce what fertilizer can do.
Your office
Call the office that covers Tri-Cities.
Estimates are done in person. Mon-Fri 8am-5pm.