{"id":8112,"date":"2016-02-24T12:00:15","date_gmt":"2016-02-24T17:00:15","guid":{"rendered":"http:\/\/www.whatgrowsthere.com\/grow\/?p=8112"},"modified":"2016-01-26T11:32:49","modified_gmt":"2016-01-26T16:32:49","slug":"timing-critical-for-applying-crabgrass-preventive","status":"publish","type":"post","link":"https:\/\/whatgrowsthere.com\/grow\/2016\/02\/24\/timing-critical-for-applying-crabgrass-preventive\/","title":{"rendered":"Timing Critical For Applying Crabgrass Preventive"},"content":{"rendered":"
\"Weed-free<\/a>

A Weed-free Lawn Is\u00a0Possible<\/p><\/div>\n

\"Crabgrass<\/a>

Crabgrass in lawn before mowing<\/p><\/div>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

To control crabgrass and other lawn weeds, 1. maintain a vigorous healthy turf so\u00a0weeds can\u2019t get established, and\u00a0 2. apply the proper pre-emergent herbicide at the\u00a0right time. Pre-emergent herbicides do not<\/strong> kill weeds; they prevent weed seeds from germinating. It\u2019s that simple.<\/p>\n

Timing is important! In many states (USDA hardiness zone 5), apply pre-emergent herbicides to lawns against summer weeds by March 15 or winter weeds by September 15. If you live south of the Mason-Dixon line (Delaware and Maryland is south),\u00a0this means a week earlier. In Atlanta and further south,\u00a0subtract another week or March 1 on your calendar<\/p>\n

Crabgrass seeds germinate when spring soil temperatures warm to 50 \u00b0F and higher. What! don\u2019t have a calendar hanging up? If forsythia starts blooming where you live, rush to apply any of following products listed below. All give excellent control of summer crabgrass; fall applications control annual bluegrass in winter:<\/p>\n

    \n
  • benefin (Balan, many products labelled \u201cCrabgrass Preventer\u201d)<\/li>\n
  • bensulide (Betasan)<\/li>\n
  • oryzalin (Surflan, Weed Impede)<\/li>\n
  • pendimethalin (Halts, Pendulum)<\/li>\n
  • prodiamine (Barricade, Prodiamine 65 WDG)<\/li>\n
  • Surflan + Balan (XL 2g)<\/li>\n<\/ul>\n

    The key is timing of application. Pre-emergent herbicides must be applied before<\/strong> crabgrass seeds germinate.\u00a0Early fall application should reduce numbers of most winter annual weeds. Lawn and grounds should be irrigated for a minimum of 2 hours within 48 hours after herbicide application.<\/p>\n

    Date of second application (in Tennessee, southwest VA and Western NC) is usually September 15 for annual bluegrass, henbit or chickweed; these nasty\u00a0weeds\u00a0germinate in\u00a0your lawn and garden in fall and winter months.<\/p>\n

    Caution<\/u>: Always read all herbicide labels thoroughly before applying the product. Know what grass species (bluegrass, fescues, ryegrasses, burmuda, zoysia, St. Augustine, centipede) makes up your lawn and what weed(s) you are trying to suppress.<\/p>\n","protected":false},"excerpt":{"rendered":"

                  To control crabgrass and other lawn weeds, 1. maintain a vigorous healthy turf so\u00a0weeds can\u2019t get established, and\u00a0 2. apply the proper pre-emergent herbicide at the\u00a0right time. Pre-emergent herbicides do not kill weeds; they prevent weed seeds from germinating. It\u2019s that simple. Timing is important! In many states […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1176,697,677,699,1088,676,1030,1035,113,905],"tags":[],"_links":{"self":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts\/8112"}],"collection":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/comments?post=8112"}],"version-history":[{"count":6,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts\/8112\/revisions"}],"predecessor-version":[{"id":8133,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/posts\/8112\/revisions\/8133"}],"wp:attachment":[{"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/media?parent=8112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/categories?post=8112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/whatgrowsthere.com\/grow\/wp-json\/wp\/v2\/tags?post=8112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}