In the Willamette Valley, the transition from wet spring to dry summer can happen in a matter of weeks. One day you're getting an inch of rain; three weeks later you're looking at 90 degrees and no precipitation in the forecast. Getting ahead of that shift makes a real difference in how your yard holds up through July and August.
1. Check and Service Your Irrigation System
If you have an irrigation system, spring is the time to run each zone and look for broken heads, misaligned rotors, or clogged drip emitters. Fix them now — not mid-July when your lawn is already stressed. If you don't have irrigation, decide whether you're going to hand-water, use hose-end sprinklers, or let the lawn go dormant.
2. Deep-Water Trees and Shrubs Before the Dry Season Starts
Give established trees and large shrubs a deep soak in late May or early June — before the soil dries out completely. This charges the root zone with moisture and helps them handle the summer on less irrigation than turf requires.
3. Apply a Layer of Mulch to All Planting Beds
A 2-3 inch layer of bark dust or wood chip mulch around plants and in beds reduces soil moisture evaporation dramatically. It can cut your irrigation needs in beds by 30-50%. Apply before the soil dries out — mulching dry soil traps heat rather than moisture.
4. Overseed Thin or Bare Lawn Areas Early
If you have thin spots you want to fill, do it in spring — not summer. Grass seed needs consistent moisture to germinate and establish, and summer's heat and dryness makes that difficult and expensive to maintain. Any overseeding should be done and rooted before the dry season hits.
5. Raise Your Mower Deck
Set your mower to 3.5-4 inches before summer. Taller grass shades the root zone, holds moisture longer, and tolerates drought stress significantly better than short-cut turf. This is one of the simplest and most impactful things you can do.
6. Apply a Slow-Release Summer Fertilizer (Carefully)
A light application of slow-release fertilizer in late May gives your lawn nutrients going into summer without pushing excessive growth. Avoid high-nitrogen fast-release products once heat arrives — they stress drought-weakened turf.
Need Help Getting Your Yard Summer-Ready?
The Yard Artisan LLC provides spring prep, mulching, irrigation startup, and lawn care services across Portland, Beaverton, Hillsboro, Newberg, Carlton, McMinnville, and all of Yamhill County. Call us before summer arrives.