Purple Nutsedge

Cyperus rotundus

Family: Cyperaceae (sy-peer-AY-see-ee) (Info)
Genus: Cyperus (sy-PEER-us) (Info)
Species: rotundus (ro-TUN-dus) (Info)

Category:

Perennials

Water Requirements:

Requires consistently moist soil; do not let dry out between waterings

Sun Exposure:

Full Sun

Foliage:

Unknown - Tell us

Foliage Color:

Unknown - Tell us

Height:

under 6 in. (15 cm)

6-12 in. (15-30 cm)

12-18 in. (30-45 cm)

18-24 in. (45-60 cm)

Spacing:

Unknown - Tell us

Hardiness:

USDA Zone 3a: to -39.9 C (-40 F)

USDA Zone 3b: to -37.2 C (-35 F)

USDA Zone 4a: to -34.4 C (-30 F)

USDA Zone 4b: to -31.6 C (-25 F)

USDA Zone 5a: to -28.8 C (-20 F)

USDA Zone 5b: to -26.1 C (-15 F)

USDA Zone 6a: to -23.3 C (-10 F)

USDA Zone 6b: to -20.5 C (-5 F)

USDA Zone 7a: to -17.7 C (0 F)

USDA Zone 7b: to -14.9 C (5 F)

USDA Zone 8a: to -12.2 C (10 F)

USDA Zone 8b: to -9.4 C (15 F)

USDA Zone 9a: to -6.6 C (20 F)

USDA Zone 9b: to -3.8 C (25 F)

USDA Zone 10a: to -1.1 C (30 F)

USDA Zone 10b: to 1.7 C (35 F)

Where to Grow:

Unknown - Tell us

Danger:

Unknown - Tell us

Bloom Color:

Unknown - Tell us

Bloom Characteristics:

Unknown - Tell us

Bloom Size:

Unknown - Tell us

Bloom Time:

Unknown - Tell us

Other details:

May be a noxious weed or invasive

Soil pH requirements:

Unknown - Tell us

Patent Information:

Unknown - Tell us

Propagation Methods:

Unknown - Tell us

Seed Collecting:

Unknown - Tell us

Regional

This plant has been said to grow in the following regions:

Orlando, Florida

Gardeners' Notes:

0
positives
1
neutral
2
negatives
RatingContent
Neutral

On Dec 19, 2006, frostweed from Josephine, Arlington, TX (Zone 8a) wrote:

Purple Nutsedge Cyperus rotundus is naturalized in Texas and other States and is considered an invasive plant in Texas.

Negative

On Nov 12, 2004, cherishlife from Pocola, OK (Zone 7a) wrote:

The USDA has this plant listed as a noxious weed for a few states. I can't believe more states haven't reported it as a noxious weed.

Arkansas:
nut grass Noxious weed
California:
purple nutsedge B list (noxious weeds)
Oregon:
purple nutsedge "A" designated weed
purple nutsedge Quarantine
Washington:
purple nutsedge Quarantine

Negative

On Jul 18, 2004, dave wrote:

A friend in San Antonio reports that this is a horrific weed that cannot be controlled. He's done everything imaginable and has yet to remove it. The only thing he hasn't tried is a smother crop which I have suggested to him.

Having fought Johnson grass in the past, I feel bad for anyone having this weed.

dave

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