If possible, have a sample of the weed you are trying to identify in front of you. A magnifying lens will be helpful. The criteria listed on the left of the screen and labeled in the picture in the middle of the screen are those that are most helpful in distinguishing between sedge weed species. They are listed roughly in order of usefulness in identifying a weed.


This program works by paring down the list of weeds on the right of the screen as you place checks next to characteristics that apply to your weed. For example, if you check the box under "Growth Season" labeled "summer annual weed," the list of weeds will be reduced from 6 to 1, with "sedge, annual" being the only weed listed:

Sedge ID image.

Note that all selected criteria are listed in the top center of the screen. In the example above, note that "Growth Season: summer annual weed" is displayed as the only characteristic that has been checked so far.

Since we currently only include six sedges in our database, we have only included a few criteria to assist in selection.

It is not necessary to check a box under each criterion. Check only those characteristics that you know to be true of your plant.

You may view pictures and detailed information about any plant included in this program by clicking your mouse on the plant name on the right of the screen at any time.

Note that the plant description window for most of the weeds displays several pictures, a large one at the top of the screen, and several smaller ones on the bottom left of the page. For example, see the yellow nutsedge page below.

Sedge ID image of yellow nutsedge.

Clicking the mouse on one of the small pictures will bring up another window that contains a larger version of the picture.

Use the scroll bar to the far right of the screen to move down the page and view the list of characteristics and four small pictures:

Sedge ID image.

Note that in yellow nutsedge example above, there is a note stating that the current page is the first of four pages. If you click the mouse on the "Next" icon, then the next page of four pictures will be displayed, and a "Previous" icon will appear. Clicking on the "Previous" icon will return you to the first page of four pictures, clicking on the "Next" icon again will display the third page of four pictures.

Sedge ID image.

Clicking on the "Field View" icon, will bring up a picture of the weed in a natural setting:

Sedge ID Field view image.

Click on the link "View All" to return to the pages of small pictures showing plant details. Note that some of the plant characteristics listed in the table on the right of the screen are colored green and are underlined. If you click the mouse on one of these links, then pictures that show details of this plant structure will be displayed to the left. For example if you click on the "Tuber Type" link for yellow nutsedge, the following screen will appear:

Sedge ID image.

Return to the main sedge weed ID screen by clicking on the "Back" link at the bottom corner of the yellow nutsedge page, or use the "Back" option on your browser.

For weeds such as yellow nutsedge for which we have management information in the TurfFiles Weed Management Program, a link "Find control measures for this weed" is present at the top of the individual plant page that will take you directly to this program if you click on it:

Sedge ID image, yellow nutsedge example.