Identification of grassy weeds

Asked September 25, 2016, 3:09 PM EDT

Please give me the name of the grassy plants in the pictures. 1,2 and 3 die off in the cooler weather, though I'm not real sure. I have a total of 5 pictures top and roots that total 10 and I will send 3 at a time then the remaining 2 that total 4.

Baltimore County Maryland tall fescue lawn weed id

3 Responses

Photo 1 - Looks like tall fescue with some dieback or brown patch disease. This time of year fescue can look like this. Turf type tall fescue is the recommended grass species and grows best in full sun to part shade. If you planted a contractors mix of different species at some point, some of the grasses may be dying out. Also, Some grass species can go dormant at different rates during hot, dry weather.
Lastly, Brown patch is a common summer disease of cool season turfgrasses. Temperature and humidity favor this disease. Avoid spring applications of fertilizer. Apply fertilizer in the fall. Most turf recovers in the fall with a return to rainfall and the proper fall fertilization.
See more on brown patch http://extension.umd.edu/hgic/brown-patch-disease-maryland-home-lawns
Photo 2 - Looks like a coarser version of tall fescue. May be Kentucky 31 tall fescue.
At this point you may have to do some spot renovation or overseeding.
Test your soil if not done in the last several years. Results give pH, liming, and fertilization recommendations. You may want to test for organic matter in the soil.https://extension.umd.edu/hgic/soils/soil-testing
See our publications on lawn renovation and overseeding and our turfgrass maintenance calendar for more information on maintenance and care throughout the year.
http://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG112_Turfgrass_Main...
http://extension.umd.edu/sites/default/files/_images/programs/hgic/Publications/HG102%20Lawn%20Estab...
mh

Hello, I am so sorry to keep bothering you guys but I really need to know what the plant that is labeled #3 is but somehow that picture did not make it through to you. I am sending it to you again. Please include "#3" in your answer. I have the other answers that you have sent me and I want to keep them all in order. Thanks so much for all your help.

Your Question #366955 was answered on October 3rd.
Below is our response to you.
#3 This looks like a type of tall fescue but we cannot say for sure. Fescue can brown out in the summer due to brown patch disease but it does not kill the crown. Most tall fescues lawns will recover with proper fall fertilization and the return of rainfall. http://extension.umd.edu/hgic/brown-patch-lawns

You can also compare to quackgrass, a perennial cool season weed. It does not die back. http://extension.umd.edu/hgic/quackgrass

mh