Santa Margarita - San Luis Rey Weed Management Area

Don't Plant a Pest

Invasive Non-native plants

(Giant reed)

Lepidium latifolium

(Perennial pepperweed)

(Hoary cress)

(Periwinkle)

Retama monosperma

(Bridal broom)

(Tamarisk, salt cedar)

Delairea odorata

(Cape/German ivy)

Centaurea solstitialis

(Yellow star thistle)

Distribution maps

Lepidium latifolium

Delairea odorata

Control Projects

Non-native plants of concern

Asparagus asparagoides

(Bridal creeper, smilax, asparagus vine)

Lythrum salicaria

(Purple loosestrife)

Salvinia molesta

(Giant salvinia)

Weeds in the news

Native planting

Public presentations

Meeting Agendas & Minutes

Related websites

Distribution Maps

Arundo donax (giant reed)
Distribution maps for Southern California and the Santa Margarita and San Luis Rey Watersheds in both JPEG and ArcView GIS file formats; Poster of mapping methodology for Arundo.
Lepidium latifolium (perennial pepperweed)
Distribution maps for San Diego County and the Santa Margarita and San Luis Rey Watersheds ArcView GIS file formats; Distribution map for the San Luis Rey Watershed in JPEG format.
Vinca major (periwinkle) | Delairea odorata (German/Cape Ivy)
Distribution maps for the San Luis Rey Watershed in both JPEG and ArcView GIS file formats.
Tamarix ssp. (Tamarisk)
Distribution map for the San Luis Rey Watershed in ArcView GIS file formats.