Give your lawn a thorough watering about once a week — a big, nice gulp. This gulp, as opposed to frequent sips, will promote a more robust root system as well as one that's more heat tolerant. Frequent (semiweekly) mowing cuts down as much as 80% of weed growth across all species. If you don't have the time to mow twice a week, mow once a week and leave the trimmings over the lawn to act as fertilizer. The trimmings will make it harder for crabgrass to sprout. If there are areas where the crabgrass is laying down, use a rake to pull it be before mowing. This helps remove immature seed heads. "Quick-up" fertilizers are a temporary solution; they'll get your lawn growing nice and green in the short term, but in the long term they actually deprive your lawn of nutrients, making the entrance for crabgrass easier. Use only about 2 to 4 pounds of nitrogen per 1,000 sq feet of lawn, depending on your lawn. If your soil is suffering from compaction, the too-compact soil is cutting off circulation (air and water) to the root systems of your normal grass. Under these conditions, crabgrass and other forms of weeds thrive. Run an aerator over your lawn every season if you suspect it's too compact, especially if your soil contains high levels of clay. . Overseed your lawn to promote the right sort of growth. While you only have to overseed patches where crabgrass thrive, it might be helpful to overseed your entire lawn every two or three seasons. Dead crabgrass can have an allelopathic effect, meaning it releases a toxin that stops other nearby plant growth. Completely remove any dead crabgrass plants from your lawn and dispose of them well away from your turf.
اغمر الحديقة بالمياه وليس بكميات قليلة. احرث الحديقة مرة أسبوعيًا على الأقل. استخدم أسمدة لا تحتوي على الكثير من النيتروجين. هوِ التربة لتفكيك الضغط. كثف العشب أزل كل أعشاب عنق الثيل الميتة.