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A rose garden heavily infested with both yellow and purple nutsedge.

Similar Species

Yellow and purple nutsedge are very similar in appearance when young. The easiest way to identify which species is present is by examining the leaf tips (Figure 3), tubers, and root structures, and by examining the inflorescence if it is present (Figures 4?5). Other sedge species such as globe sedge (Cyperus croceus) (Figure 6) and kyllinga (Kyllinga spp.) (Figure 7) can be distinguished from yellow and purple nutsedge by examining the infloresence.

Figure 6. Globe Sedge
Figure 7.   Kyllinga, sedge species

Kyllinga (Kyllinga brevifolia) is another sedge species that is often confused with nutsedge.

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