Many people assume that there’s no need to start treating their lawn until “spring” when the trees and flowers are blooming in April. Warmer spring temperatures bring your lawn out of dormancy and begins an active growth cycle. Unfortunately, that means crabgrass will be germinating and growing too! Pre-emergent crabgrass weed control applications are an important step in annual lawn management. However, choosing the right timing for the application can be tricky, and bad timing will only result in a waste of time and money.
For the best results, pre-emergent should be applied BEFORE crabgrass is visible above ground. Just like those pretty spring flowers, new crabgrass will begin to appear in mid-spring and by then, it’s too late. The key to crabgrass control is making sure the seeds cannot germinate. If you wait until after crabgrass is present and growing, pre-emergent won’t work and you’re in for an uphill battle to keep control of your lawn without doing damage. In our growing region, a lawn without pre-emergent treatment can expect crabgrass to spread quickly during the warm summer months. Between midsummer and early fall, each plant will produce thousands of seeds. While the first frost will kill existing crabgrass plants, the seeds remain dormant through the winter, waiting to ruin your lawn next spring. Unwanted grasses and weeds simply cannot thrive in robust grass; besides a regular fertilization and weed control regimen to keep your turf happy and healthy, keep these tips in mind for success in the spring and summer:
• Mow at frequent intervals to keep the grass at a consistent height- we recommend 3.75 to 4 inches for tall fescue. Crabgrass seeds require plenty of light to germinate, so keeping the turf thick and tall will keep any weed seeds at the soil surface in the dark. Mow too short, and weed/crabgrass seeds will grow, well… like weeds. Also, be sure to keep your mower blades sharp so that they CUT blades of grass, instead of tearing. You can bag clippings if you like, but we recommend mulch mowing and leaving the clippings in the lawn- they help restore nutrients to the soil as they decompose, and can help to block sunlight from those pesky weed seeds lurking on the soil surface!
•In an established lawn, water deeply once or twice a week this spring and summer, instead of daily. Watering on an irregular schedule and only when needed promotes deeper root growth that’s essential to healthy turf grass. Remember, the goal is a few gulps, not several sips. The only time you’ll want to water frequently, is if your lawn is newly-seeded or sodded: then, you’d water in shallow, more frequent intervals just until the grass gets established before weaning it back to once or twice a week. Not sure how much is enough? We recommend at least one inch of water a week, once the rainy part of spring is over. Because every sprinkler system flows differently, the easiest way to measure an inch of water on the lawn is to set a clean, empty tuna can on the lawn and run your system. When the can is full to the brim- that’s one inch of water. Write down how long you had the system running to water that amount, then you can program your system for the same amount of time, once (or twice) a week!
If you’re concerned about crabgrass ruining your lawn, call us! The first two rounds of our Basic Program of fertilization & weed control include crabgrass pre-emergent.
Our service areas:
Virginia Beach Lawn Care
Chesapeake Lawn Care
Norfolk Lawn Care
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Aeration involves perforating the soil with small holes to allow air, water and nutrients to penetrate the grass roots. See why you need to aearate your lawn this fall.
Continue reading Aeration – 5 Reasons to Aerate Your Lawn