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NEW! A Pesticide Container Recycling Event will be held on June 2, 2018.  Please see this flyer for more information.

7_EDRR Invasives ID sheets version 2-12-15_Page_01

Invasive Weed Watch

Invasive plant species can be found all throughout San Diego County. From the coast side to the desert, invasive plants have made their way into native habitat. The SDWMA focuses on invasive plant species that may be controlled or eradicated from San Diego County. Many species have become so common that weed eradication is no longer a cost effective or viable option. The invasive species below are or have been of concern to the SDWMA. To report a sighting of any of the invasive plant species of concern below, click here.

Invasive Weed Watch

 
 

Common Name

Scientific Name

Rating*

 

Spotted knapweed

Centaurea stoebe ssp.

Micranthos

A

 

Artichoke thistle

Cynara cardunculus

B

 

Barbed goat grass

Aegilops triuncialis

B

 

Bridal broom

Retama monosperma

B

 

Canary Island St. John's

wort

Hypericum canariense

B

 

Carnation Spurge

Euphorbia terracina

B

 

Giant reed

Arundo donax

B

 

Pampas grass (and jubata)

Cortaderia selloana and

jubata

B

 

Perennial pepperweed

Lepidium latifolium

B

 

Purple loosestrife

Lythrum salicaria

B

 

Purple star thistle

Centaurea calcitrapa

B

 

French broom

Genista monspessulana

C

 

Medusahead

Elymus caput-medusae

C

 

Scotch Broom

Cytisus scoparius

C

 

Spanish broom

Spartium junceum

C

 

Yellow star thistle

Centaurea solstitialis

C

 

Yellow flag iris

Iris pseudacorus

Q

 

Crown daisy

Glebionis coronaria

N/I**

 

Devil's thorn

Emex spinosa

N/I**

 

Eupatory

Ageratina adenophora

N/I**

 

Fennel

Foeniculum vulgare

N/I**

 

Globe chamomile

Oncosiphon piluliferum

N/I**

 

Long-flowered veldt grass

Ehrharta longiflora

N/I**

 

Milk Thistle

Silybum marianum

N/I**

 

Pacific bent grass

Agrostis avenacea

N/I**

 

Perennial veldt grass

Ehrharta calycina

N/I**

 

Purple false brome

Brachypodium distachyon

N/I**

 

Stinkwort

Dittrichia graveolens

N/I**

 

Ward's weed

Carrichtera annua

N/I**

 

 

*CDFA Rating

**N/I – Noxious or Invasive; CDFA rating not available