Spring Landscaping Checklist: 12 Things to Do Before May in Northern Virginia

Spring in Loudoun County moves faster than most homeowners expect. One week the ground is still frozen, and two weeks later you've already missed the pre-emergent window. After years of working Northern Virginia properties through the spring transition, here's the exact sequence we follow — and the tasks that have the biggest impact.

This checklist is organized roughly in order of priority, with the time-sensitive items first. Some tasks have hard windows — miss them and you're waiting until fall. Others are more flexible but still benefit from being done early.

1. Apply Pre-Emergent Herbicide (Don't Miss This Window)

This is the single most time-critical task on the list. Pre-emergent prevents crabgrass and other summer annual weeds from germinating — but it only works if applied before soil temperatures hit 55°F consistently. In Northern Virginia, that window typically falls between late February and mid-March, depending on the year.

Miss it and you'll spend the summer pulling crabgrass. Apply it too late and it does nothing. We track soil temps daily during this window and schedule pre-emergent applications for all our lawn maintenance clients as soon as conditions are right.

2. Irrigation System Spring Start-Up

Your irrigation system was winterized in October — and it's been sitting pressurized and dormant for 4–5 months. Before you turn it on, a proper spring start-up includes checking each zone for broken heads, misaligned sprinklers, and leaks. In our experience, at least 1 in 3 systems has some issue after a Northern Virginia winter, often from freeze damage the homeowner doesn't know about.

Don't just flip the valve and walk away — a zone running at 50% coverage will quietly give you uneven turf by June and you'll wonder why.

3. Spring Clean-Up: Remove Leaves, Debris & Dead Material

Winter leaves mat down and block sunlight, trapping moisture that encourages disease and delays green-up. Rake or blow beds and lawn areas as soon as the ground is no longer soggy. Pay particular attention to areas under deciduous trees — even a thin layer of whole leaves can suffocate emerging turf.

4. Prune Ornamental Grasses and Perennials

Cut ornamental grasses back hard — to about 4–6 inches — before new growth emerges. Same with most perennials: cut back dead stalks to the base in early spring. If you wait until the new growth is already up, you risk damaging it during cleanup.

Exception: spring-blooming shrubs like forsythia, azalea, and viburnum should be pruned after they bloom, not before. Pruning these in early spring removes the flower buds.

5. Inspect and Prune Trees & Shrubs for Winter Damage

Northern Virginia winters are hard on plants — we get ice storms, late frosts, and sometimes dramatic temperature swings that cause dieback. Walk your property in early March and look for broken branches, dead wood, and winter-killed branch tips. Prune dead material cleanly before sap starts flowing heavily to prevent disease entry.

6. Edge All Beds and Define Clean Lines

Over winter, grass creeps into beds, edges break down, and the clean separation between lawn and mulch beds disappears. Re-edging in spring — before you mulch — gives you a sharp defined line and a much cleaner finished look. This is one of those tasks that takes a few hours but has an outsized visual impact on curb appeal.

7. Refresh Mulch (2–3 Inch Layer)

Fresh mulch in spring is both functional and visual: it suppresses weeds, retains moisture, and makes your beds look clean and intentional. Target a 2–3 inch depth — more than that and you risk smothering roots and creating a habitat for pests.

Pull mulch away from tree trunks and shrub stems (the "volcano mulching" look might seem dramatic, but it promotes rot and disease). Keep a 2–3 inch gap around all woody stems.

8. Fertilize Lawn (After Pre-Emergent, Not Before)

Spring fertilization for cool-season turf like tall fescue should be light — a low-nitrogen application in early spring keeps grass from putting on excessive top growth at the expense of root development. Heavy spring nitrogen feeding leads to lush grass that struggles through summer heat.

Apply after your pre-emergent (not at the same time, as application timing differs), and hold the main fertilization push for fall.

9. Check Hardscapes for Winter Heave and Settling

Northern Virginia's freeze-thaw cycles are hard on pavers, steps, and retaining walls. Walk your patio, walkways, and steps in early spring and look for lifted pavers, settled sections, loose capstone on walls, and any joint sand that washed out over winter. Addressing these early — before they get worse or become a trip hazard — is much cheaper than waiting.

10. Spot-Treat Winter Lawn Damage

Look for bare patches caused by snow mold, salt damage (near driveways and sidewalks), or ice coverage. These areas may need overseeding, but time it carefully — early spring overseeding competes with pre-emergent. If you're applying pre-emergent for crabgrass control, hold off on overseeding until fall, or skip pre-emergent in the affected areas and overseed them instead.

11. Clean and Service Lawn Equipment

Sharpen mower blades before the first cut of the season — dull blades tear grass instead of cutting it cleanly, leaving ragged tips that turn brown and create entry points for disease. Change oil, replace the air filter, and make sure your equipment is ready before the season starts, not after it's already underway.

12. Plan Any New Projects Early

Spring and early summer are our busiest booking window for patios, retaining walls, and outdoor living projects. If you have something in mind for this season, reach out in February or March — not May. By the time most homeowners are thinking about a new patio, our installation schedule for spring is already filling up.