Banner Photo Sources:

-          False nutsedge: PB Pelser, http://www.phytoimages.siu.edu/imgs/pelserpb/r/Cyperaceae_Cyperus_strigosus_12059.html

-          Purple nutsedge: dryadpharmacy, https://dryadpharmacy.tumblr.com/post/144825834051/cyperus-rotundus-coco-grass-java-grass-nut/embed

-          Yellow nutsedge: Joseph, https://landscapeandsnow.com/blog/2013/05/26/yellow-nutsedge-the-problem-grass-like-weed-that-will-not-leave-your-lawn-without-a-fight/

Photo Sources: 

-          False nutsedge: RW Smith, https://www.wildflower.org/gallery/result.php?id_image=43552

-          Purple nutsedge: Karli Petrovic, https://www.growingproduce.com/vegetables/field-scouting-guide-purple-nutsedge/

-          Yellow nutsedge: Karli Petrovic, https://www.growingproduce.com/vegetables/field-scouting-guide-yellow-nutsedge/