Arlington County. The skylines of Arlington's Courthouse and Rosslyn neighborhoods, with the Georgetown and Downtown neighborhoods of Washington, D.C. immediately past them. The county accounts for most of Virginia's border with the District.
Watering and mowing alone will not make a healthy lawn. It must be fertilized. We have included a starter fertilizer in the mixture applied, but it is only sufficient to supply enough nutrients for about 30 to 45 days. It is important for the development of a healthy lawn that a fertilization program be started at this time.
As a rule of thumb, it is best to apply fertilizers when your lawn is actively growing. If you fertilize with nitrogen while your lawn is dormant, you can encourage weed growth, and ultimately waste fertilizer.Cool-Season Grasses tend to have two flourishing (or growing) periods. The first is after the lawn's return from winter dormancy. Avoid applying nitrogen when your lawn is dormant or has not yet greened-up. 2  The growing stimulant provided by the nitrogen could end up encouraging weed growth or the growth of other unwanted grasses in your lawn.