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Volunteer Opportunities

If you are interested in contributing your time and energy to buffelgrass control, there are a variety of ways in which you can get involved and help.

Volunteer Buffelgrass Weedwacking Groups in the Tucson Area as of 2014

There are many groups throughout the region that pull buffelgrass. You can find one working in your area (or an area you are interested in) by clicking on the links below. As new groups form we will add them to our list.

If you would like to form your own group and would like more information:  Please contact Marilyn Hanson


 Other useful links can be found at the Arizona Native Plant Society Website

Sonoran Desert Weedwackers/ Wednesday Weedwackers

Organized in September 2000. Wednesday Weedwackers started in February of 2007.

The Weedwackers are dedicated to removing buffelgrass and other invasives from Tucson Mountain Park (TMP). Originally the Weedwackers were working with the support from the Desert Museum. Since 2005, Pima County has been helping with publicity. Pima County began supplying van transportation, bags, tools and gloves in 2002. The Arizona Native Plant Society has supported the Weedwackers from the beginning paying for brochures and road signs. Now the Weedwackers could not continue without the support of Pima County personnel. Doug Siegel and others provide van transportation and considerable time to continue this effort.

Average Number of Volunteers per Saturday event: depends on the season, 20-40 during the school year, 10-15 during the summer, 470 people on the e-list.

Wednesday Weedwackers: between 8-12 volunteers. These folks are regulars!

Monthly Reconnaissance: Mike Bauer and Doug Siegel have been mapping the presence of buffelgrass throughout TMP since 2001. Marilyn Hanson has mapped all of this work using Google Maps. Aaryn Olsson is a collaborator with these maps and has access to the data.

Meeting Time: Third Saturday and second and fourth Wednesday of each month.

Location of pulls: Tucson Mountain Park. The initial work was done around the Desert Museum, clearing all of the washes above and below the Museum. The group then concentrated on the roadsides throughout the park. Since 2007, most of the effort has been clearing large infestations on the upper slopes of Tucson Mountains. Much time has been spent in 2006 and 2008 clearing a huge patch on the south face of Brown Mountain. For six months in 2007-2008 volunteers cleared the Trail’s End Wash, which was completely choked with fountain grass and buffelgrass. In March of 2009 weedwackers found the wash mostly clear of invasive grasses.

The Wednesday Weedwackers climb higher and work longer. They tackle the hard spots that would be difficult for the Saturday volunteers. Since September 2007, they have been working on the south-facing slope of Bushmaster Peak. They continue to remove patches of buffelgrass from that slope.

Seven miles of washes have been monitored in Spring 2008. The washes are mostly clear of invasive grasses, verifying that manual digging has been effective.

Volunteers have worked over 27,000 hours for a value over $579,000 (calculated using the yearly Federal volunteer hourly rate).


Marilyn Hanson

Doug Siegel

  • Natural Resource Specialist
  • Pima County Natural Resources Parks & Recreation
  • 520-877-6063


Data points showing the activity of the Sonoran Desert Weedwackers (2000-2008)

Weedwacking map


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Saguaro National Park (Rincon Mountain District) Weedwackers

Organized in October 2007.

Average Number of Volunteers per event: 8 active volunteers, cap event at around 30 volunteers.

Meeting Time: every second Saturday of the month (except June, July & August). 

September-October 700-1100

November-March 800-1200

April-May 700-1100

Location of pulls: Focusing efforts off trail from the Cactus Forest Loop road. Private events with local organizations happen at both districts and can be scheduled throughout the season.

The SNP-E Weedwackers have removed approximately 55 acres of buffelgrass from Saguaro National Park, contributing over 4500 hours of volunteer labor.  On average, they have a turnout of approximately 12 volunteers each month, including several regulars. No experience needed. Tools and gloves are provided. 


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Weed-Free Trails Program. SNP 

Organized in February of 2008

Number of Volunteers: Twenty-five  active individuals. In 2014, 30 interested individuals attended the 8 hour training and orientation. 

The goal of this program is for volunteers to monitor the trails, mapping and removing exotic plants from these corridors and fulfilling the goal of “Early Detection, Rapid Response”. Volunteers contributed 222 hours in 2008. In FY09, seven volunteers became active in the program and surveyed almost all of the trails at Rincon Mountain District twice to account for various germination events. They removed 7.2 gross acres of invasive plants, and contributed approximately 1,050 hours to this effort. In 2013, twelve volunteers monitored 1,150 miles of trails, removed 11 acres of invasive plants, contributing approximately 1,039 hours to the volunteer program.

Volunteers must attend an orientation on: November 6-7, 2015 at Tucson Mountain District EE Center                     

Expectations of volunteers - tracking hours, Plant ID, Data collection and recording, GPS training, Outreach training, Cultural training, Radio & Safety training. Volunteers must go out at least three times during the WFT season to remain an active volunteer in the program. 


• Michael Turner



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Coronado Foothills Weedwackers

The Coronado Foothills Weedwackers are scheduled to work the 1st and 3rd Saturdays of each month  -  please contact  Marge at to confirm time and location.  We start at 6:30a.m. and work only one to one and half hours.  Currently we're working in Finger Rock Wash.

 As always, wear sunscreen and bring water.



North East Tucson Weed Busters

Usually the last Saturday of the month. 6:00 a.m. to 8:00 a.m.

As always wear sunscreen or a hat and sturdy shoes. Bring water, gloves and any tool you prefer working with. Contact Sandra Brody at if you have any questions.


Coming from the west: Take Craycroft Road heading North; turn right onto E River Road; turn Left onto N Tanury Dr -stay on Tanury by keeping left, take the first left onto N Calle Vista Ciudad; turn Right into N Wilmot Dr, N Wilmot Rd turns into E Avenida Arriba. You can park by the right shoulder.

Coming from the east: Take River Road heading west; turn right into Tanury Dr; continue with directions above.


Oro Valley Buffel Busters

Organized in July 2008.

Average Number of Volunteers per event: 10

Meeting Time: every second Saturday of the month

Location of pulls:

  • Honeybee Canyon- 1 event
  • Tangerine Road-La Cholla-Dove Mountain-2009 Beat Back BG Day
  • Lambert Lane-River Walk Drive-3 events
  • Canada del Oro Wash at La Canada/ W. Oak Shadow Dr.-5 events
  • Naranja Drive- 2 events


Phil Trenary

  • Public Works
  • Operation Division Manager
  • 680 W Calle Concordia
  • Oro Valley, AZ  85704
  • 520-229-4868

Karn Boyce

  • Water Conservation Specialist
  • Oro Valley Water Utility
  • 11000 N La Canada Dr.
  • Oro Valley, AZ  85737
  • 520-229-5024

Carmen Ryan

  • DPW ~ Senior Office Assistant
  • 680 W Calle Concordia
  • Oro Valley, AZ  85704
  • 520-229-5070


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Marana Weedwackers

 Organized in December 2007.

 Average Number of Volunteers per event: 6. Marana has a listserv of 42 people and sends out monthly reminders of pulls. This group has taken a break for the summer and plans to resume activity in September.

 Location of pulls: Old Silverbell Road, Tangerine Road, linear park behind Coyote Trails School. 

 The Town of Marana also sprays roadside areas for buffelgrass when it is green and the O&M crew (including Department of Corrections) pulls buffelgrass when it is dry. Town field staff also maps buffelgrass as they find it during field visits.



Janine Spencer

  • Environmental Project Coordinator
  • 11555 West Civic Center Drive
  • Marana, AZ 85653
  • 520-382-2658


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Arizona Native Plant Society, Tucson Chapter

The Waterman Restoration Site

Organized in July 2010

Sierra Club and the Tucson Weedwhackers organized buffelgrass events at the illegal Harlow Jones airstrip site at the north base of the Waterman Mountains on Ironwood Forest National Monument starting in 2005 The group worked twice a year, digging and bagging BG.  BLM hired a commercial contract crew to spray Roundup on the main buffelgrass stand on and above the landing strip in August 2008. But the buffelgrass was too thick and too extensive to be brought under control by occasional digging and spraying.

Starting in August 2010, AZNPS led volunteers spot sprayed buffelgrass three times per week on 18 acres of disturbed land and 10 acres of peripheral desert. Spot spraying with sharply decreasing frequency has continued every monsoon through 2013. It is anticipated that all buffelgrass on the total 28 acres will finally be brought under control by the end of 2015. Photos and additional information can be found on the AZNPS website :

Average Number of Volunteers: 3-4 volunteers are needed for backpack spraying in the month of September every year. In addition, we have other restoration activities occurring year round, including planting native seed, building and repairing earthen berms, and digging swales to promote rainwater infiltration. 

Meeting time: In the monsoon  months we meet up at 6:30am and during the winter months at 7:30am

Location of buffelgrass treatments : Waterman Mountains on Ironwood Forest National Monument

Meeting point and time: Information provided on the AZNPS weekly eblast and AZNPS Facebook page :


John Scheuring


Weedwackers Map 3


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Neighborhood Weedwacking Groups in Tucson (Incomplete)

  • La Paloma/Swan and Sunrise- There are neighborhood groups working on removing extensive buffelgrass patches in this area.
  • Barrio Centro- persons working on Tucson Boulevard and 22nd Street.
  • Campbell and north of Skyline- One person removing BG along the roadsides in this neighborhood.
  • Caballo Rd. from Irvington to Holiday, Dakota from Caballo to Camino de Oeste- south of Hwy 86- neighbors digging and bagging BG.
  • Pima Canyon Trailhead- neighbors dug out and bagged fountain grass and buffelgrass.
  • Bopp Road- Local HOA removing BG along the roadsides and on private property.


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Phoenix Weedwackers

Organized in December 2006

The Phoenix Weedwackers started work in the Piestewa Peak area of the Phoenix Mountain Preserves, an area where we remain part of the year due to the initial heavy infestation and fire danger. Our goal is to control buffel infestation in the heavily used, accessible areas of the preserve so as to not lose the quality and character of the desert, and to prevent any large fires from occurring. Tools, bags and gloves are supplied by the Weedwackers and the Phoenix Parks Department. The Parks Department also is responsible for removal of the bags. Through May of 2009 we have accumulated over 1800 volunteer hours and have removed over 3500 bags of buffel and fountain grass from the preserves.

Average Number of Volunteers per event: 20 

Meeting Time: every second Saturday of the month, times vary by the season. The 2010 event hours from July onward are Jul-Aug 6-9 am, Sept-Oct 7-10 am and Nov-Mar of 2011 8-11 am.

Location of pulls: The group is currently working at Piestewa Peak as of July 2010. In the coming months our work locations may change to different parts of the parks so if you are not on the e-mail reminder list, please contact Claudia before showing up!!! (

To see past work events visit


Claudia Bloom


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Pima County Buffelgrass Education Outreach Program


Organized in August 2007. 12 volunteers were trained; 4-6 are currently active. Another training session for Buffelgrass Outreach Volunteers is planned for late summer of 2009.

Meeting times: Trained volunteers speak to any group in the greater Tucson area. They deliver a “Buffelgrass in the Sonoran Desert” presentation that provides information on where the invasive grasses came from, why they are considered a serious threat, and what can be done to control them. Buffelgrass Outreach Volunteers also staff tables with buffelgrass samples and handouts at community events in Tucson.

Number of Events: From July of 2008 to May of 2009, 22 “Buffelgrass in the Sonoran Desert” presentations were given to a total of 480 people. Volunteers and staff provided Buffelgrass education materials and information at six community events, serving a total of 1315 people.


Meg Quinn

  • Pima County Natural Resources, Parks & Recreation, Environmental Education Team
  • 3500 West River Road, Tucson, AZ 85741
  • 520-615-7855
  • Email:


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Outside groups helping the Sonoran Desert Weedwackers


Outside groups-2009

  • Marana High School- (7 volunteers) Brown Mountain-
  • Sunnyside HS- (10)(7) -Brown Mountain-
  • Innercity Outings (Sierra Club) Los Niños 5th graders-Brown
  • Maxwell Middle School-TUSD- Ironwood Picnic
  • Marana HS (3)- BBB-2009-
  • Picture Rocks Scout Troop (9 volunteers)
  • UA Sch of Education-Alberto Arenas (20 volunteers)-Ironwood PA-South
  • ASDM Coati Club- Robin Kropp (22 volunteers) –dump across from the Desert Museum
  • ASDM Education staff (9 volunteers)
  • ASDM docents (4)
  • UA Landscape Architecture students (3)
  • Amerischools Academy Middle School (57 kids+8 adults)

 Outside Groups-2008

  • Boy Scouts of America (12 volunteers/ 48 hours/Trail’s End wash)
  • Hiking Club of America (8 volunteers/40 hours/Tucson Estates)
  • Invasive Species Managers (17 volunteers/34 hours)
  • Cholla High School (Trail’s End Wash)
  • UA School of Education-students from Argentina, Chile and Uruguay (24 volunteers/3.5hrs)
  • UA School of Education- students from South America- Bushmaster Peak
  • Sierra Club (18 volunteers/8 hrs=144hrs) Bushmaster Peak
  • Amerischools Academy (15 volunteers/3.5hrs=52.5 hrs/Prospector Trail)
  • Amerischools Academy (19 volunteersx2hrs=36 hrs/King Canyon)
  • University of Miami (9 volunteers x 2.5hrs=22.5/CAP canal)
  • University of Miami (7 volunteers x4=28 hrs/Bushmaster Peak)
  • Americorps (4 volunteers x7hrs=28hrs/TrEnd Wash&TusEst Ridge)
  • SUNY Fredonia (14 volunteers /6hrs=84hrs/back of SASI)
  • Tucson City School (13 volunteers /2.5 hrs=32.5/CAP canal)

  Prior to 2008, students from Catalina Foothills and Tucson Magnet HS volunteered. 

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