2005 California Desert Exotic Mustard Roadside Survey

County Road S80 - May 2005 - Raw data.
Imperial County

Surveyed and Copyright © 2005 by Craig Dremann

Box 361, Redwood City, CA 94064 - (650) 325-7333

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Sahara mustard

Sahara mustard
Imperial County Road S-80 5 miles east of Ocotillo at BLM Plaster City ORV area, a mustard disaster ready to happen. Photo. 5/18/2005

County Road S80 - May 2005 - Raw data.

Results of a 70 mph windshield survey (or whatever the local speed limits were), of three exotic Mustards: Either not present; is present along roadsides or in medians; or is outside of the roadside to the fence line or has moved from the roadsides to infest adjacent land.

NS = None Seen. None of the three exotic Mustards of concern were seen along roadside ditches; or if divided highway, also not seen in the roadside median, or in lands adjacent to the road.

RS = Road Sides were infested. MED = In divided highways, in medians.

DES = One or more Exotic Mustards have moved from the roadsides into the desert, agricultural areas, or other lands adjacent to the roadsides. FL = Only found along the highway cyclone-fence line, but is far enough off the roadside to pose an immediate problem for the lands adjacent to the fences. At the time of the survey, did not appear to be moving off the fence line yet.


BT = Brassica tournefortii or Sahara Mustard

PM = Post miles along highways, and numbers indicate the averages found not just at each post mile, but for 1/2 mile on either side of the post mile marker.

(Landmarks and other notes on other exotics or native plants will be in parentheses)

IMPERIAL COUNTY, from town of Ocotillo, eastward to Silsbee Road near Seeley

Survey 5/18/2005, may be periodically updated, notebook 194, pages

(Odometer miles noted because PM markers not seen)

0-1 NS - Town of Ocotillo
1 -
2 -
3 -
4 -
NS - Badlands, Hilaria
BLM Plaster City ORB area
5 -
RS - rare
6 -
RS - scattered, thick in places
7 -
RS - scattered
8 -
NS - creosote with plantago
9 -
NS - United Gypsum plant
10 -
NS - desert stipa originally
11 - NS
12 -
RS - very rare - Dunaway Road
13 -
RS solid in ditches
13.5 -
NS - Brown Road stop sign
14 -
NS - agricultural lands
15 - 
NS - agricultural lands
16 -
NS - agricultural lands
17 -
NS - Big wash
18 -
NS - Big wash, town of Seeley
19 -
NS - agricultural lands
20 -
NS - agricultural lands
21 -
NS - agricultural lands - Silsbee Road

Updated December 24, 2022 - The Reveg Edge Ecological Restoration service