All posts by TCWeed

JHWMA - Education Programs Students Marking Weed Area image

20th Anniversary JHWMA – Early Cooperative Efforts

Our team has accomplished a lot in 20 years. Outlined below are some of our early projects and a few community engagement activities our team has participated in. We hope you come to realize how committed we are to eradicating invasive weeds in Teton County and continuing to serve you for many years to come.

Early Cooperative Efforts:

  • Vehicles and Spray Equipment
  • Employee Housing
  • Mapping Equipment and Technology
  • Collection of Bio Control Insects
  • Sharing of Information
  • Training

Education Programs:

  • Local Events
  • Classroom
  • Weed Pulls
  • Trail Days

Gros Ventre River Spray Days

  • 2018 – 19th Year
  • 1st spotted knapweed – 1974
  • Annually crews treat 75-100 acres
  • Over $750,000 spent
  • Over 26 federal, state, local, & private businesses have partnered + dozens of private landowners

We’ll continually post about our 20th Anniversary with Jackson Hole Weed Management Association with a reflection of what we have achieved in the past twenty years. Stay tuned.

JHWMA Group Photo

Celebrate 20th Anniversary with JHWMA


Where have 20 years gone?

  • MOU & Cooperative Agreement finalized in 1999
  • Funding:
    • 2000 – $70,750
    • 2018 – $805,380




The Jackson Hole Weed Management Area (JHWMA) comprises nearly 2,290,000 acres of public and private lands within Wyoming. Approximately 11% of the area is made up of public lands administered by Yellowstone National Park, 15% by Grand Teton National Park, 62% by the Bridger-Teton National Forest, 8% by the Targhee National Forest, 1% by the National Elk Refuge, and less then 1% by the Bureau of Land Management, and the Bureau of Reclamation, combined. The remaining 3% of the area is in state and private ownership primarily in the Jackson Hole area. The general area is commonly know as the Greater Yellowstone Area and for the most part, the area is defined as the South Fork of the Snake River watershed including all of its tributaries within the State of Wyoming. The watershed begins at its headwaters in Yellowstone National Park and ends in the Snake River Canyon at the Wyoming/Idaho border (see map Appendix A).

This area has been acclaimed as one of the most intact and important ecosystems in the United States. It hosts world renowned flora and fauna, Wilderness areas, National Parks, threatened plant and wildlife species, and the nationally acclaimed Jackson Hole resort area. These unique attributes have attracted millions of people and development to the area. Unfortunately this growth and use has brought with it an invasion of noxious weeds which are now a significant threat to the economy and ecosystem.


The purpose of the Jackson Hole Weed Management Association is to establish common long and short-term management policies, goals, and objectives necessary for cooperatively managing and funding noxious weed activities across all jurisdictional boundaries in the JHWMA. Cooperators include federal, state, county, and private land management agencies as well as other interested organizations and individuals.  This mutual aid approach to weed management will insure that the maximum efficiency and effectiveness for prevention and control is realized.

Founding Fathers

A big thank you to all of the JHWMA founding fathers for all you have accomplished!

  • Pinto Ranch: Alan Rosenbaum
  • Grand Teton National Park: Bob Schiller, Steve Haynes
  • National Elk Refuge: Barry Reiswig & Steve Brock
  • Bridger-Teton National Forest: Jim Ozenberger & Scott Fitzwilliams
  • TCWP: Fred Lemming & Brett Richardson
  • NRCS: John Kramer
  • TCNRD: Dana Bonham
  • WGFD: Steve Kilpatrick
  • UW Ext. Agent: Jay Hanson
  • Hatchet Ranch: Jerome Young

“It’s an honor to be a part of such a wonderful organization full of dedicated hard working people, who really care about protecting our natural resources,” stated Mary Cernicek, President of the JHWMA. “It’s exciting to see how far this group has come and all of the accomplishments that have been made, and even more exciting to imagine where it will be in another 10 years!”


Early Projects of the Jackson Hole Weed Management Association:

Education Programs


Early Detection Rapid Response (EDRR)

Snake River Project: A booklet describing the importance of working to protect areas along the Snake River. It targets many interest levels on, “Why should I care about noxious weeds?” Noxious weed species found along the river are described in detail and many myths are turned to fact. Free!

We’ll continually post about our 20th Anniversary with Jackson Hole Weed Management Association with a reflection of what we have achieved in the past twenty years. Stay tuned.

Dames Rocket Invasive Weed image

Weed of the Month: Dames Rocket

Invasive and non-native species were introduced for a variety of reasons. Some hitched a ride and were accidentally introduced. Some were brought along and planted for their medicinal qualities. Others, like Dame’s Rocket (Hesperis matronalis L.), were brought to North America as ornamentals.

Dames Rocket alternate image

It is hard to miss the vibrant purple flowers (they can sometimes be white) especially since they’re one of the first to flower each spring, but this mustard species is a prolific seed producer and can quickly take over an area squeezing out native species.

Dame’s rocket typically grows to 2 to 3 feet in height, but it can occasionally reach 4 feet tall. The leaves are oblong and are sharply toothed. They are alternately arranged on the stem with larger leaves toward the bottom of the plant and decrease in size toward the top. Dame’s rocket produces loose clusters of 4 petaled flowers.

When soil is moist in the spring, Dame’s rocket can be easily hand pulled. Large infestations can be chemically treated.
Looking for a vibrant replacement for Dame’s rocket?

  • Penstemon
  • Larkspur
  • Blue flax
  • Harebell

Morel Mushroom Season Etiquette

Ahh.. it’s May in the Tetons and the fungi are popping up everywhere. A particularly popular fungi are called Morels, they look like brains on a stem – a little crazy looking. Delicious if you like mushrooms, especially good on steaks, pasta or just stuffed.

Combing the woods for those gems – your eyes darting back and forth, walking through the damp grasses, the smell of fresh spring air filling the valley floor. The suspense and the excitement of finding these oddly shaped phenomenon is just part of the welcoming season change in Jackson. Sometimes you won’t see any and others you will see groves of them surrounding you, it’s pretty magical!

Out of the shear excitement, it’s easy to forget the morel mushroom etiquette.

Some Morel Mushroom Etiquette

  1. False Morels vs. Real Ones: You do not want to get these mixed up. The false Morels are actually poisonous. The real morels are hollow where the false ones are not. The Teton County Library has a lot of mushroom books to get you knowledgeable about morels and where to find them and identify them.
  2. Bring a basket or netted bag to collect: Mushrooms release their spores and when you pick them it’s wise and only right to let those spores take a journey through the woods with you.
  3. Don’t pick every single mushroom: Trust me there are plenty of morels to go around. But aside from that you want those mushrooms to drop spores so we may all enjoy them for years to come.
  4. Leave the base of the stem/root intact and in the dirt: it’s important to remember this when you harvest them, very much like #3 it encourages them to grow back next season.
  5. Never ask someone where they go: Let some things remain a secret and discover your own special Morel stashes.
  6. It’s illegal to forage for mushrooms in Grand Teton National Park: Unfortunately someone spoiled it for the rest of us but don’t worry there are plenty of places to go.
  7. Large animals are afoot, be alert and respect their space: Since this is the time of year when bears come out and begin to forage themselves it’s wise to bring your bear spray. Wandering through the woods and keeping your head down is primarily what hunting for Morels is like but be sure to keep an eye out for the four-legged creatures and their habitat you are entering.

Invasive Species to Lookout for..

Houndstongue: A plant that flowers every other year, the noxious Houndstongue creates a heart-shaped bur seed. If you have spent any amount of time hiking or exploring in the outdoors, you are most likely familiar with this seed that turns light brown and stick to clothes and animals in the fall season, as it likes to hitch a ride around by sticking to your socks and shoes or your pet’s fur. It is crucial to note that the Houndstongue is toxic if consumed in high enough quantities, because it has an alkaloid that stops liver cells from reproducing.

Although in May there are no new blooms of Houndstongue these little free-loaders resurface after the snow melt and will happily hitch a ride as you zigzag the valley for those Morel mushrooms. Kindly throw these incredibly annoying seeds in the trash can, instead of on the ground, to help minimize the spread of this incredibly annoying weed.

2019 Landowner Permission Letter

In an effort to update records, properties that have received mosquito surveillance and/or high priority invasive species control from Teton County Weed & Pest in the past may receive a letter in the mail this week to request written permission to continue control services. Control measures may have been taken in the form of larviciding standing water, adult mosquito trapping for West Nile virus sampling, or your neighborhood has requested ultra-low volume (ULV) adulticiding, in addition to, other invasive species control measures.

The form is due back to the Teton County Weed & Pest office by May 5, 2019. An electronic version of the form is available on our website as well, at this link.

All land parcels that produce or harbor mosquito species are offered free surveillance and control measures, only when landowner permission is given. The effective control of mosquito populations hinges on significant participation by our community. The Teton Weed & Pest surveillance program incorporates larval, adult and disease surveillance; local and area-wide cultural, biorational and chemical control measures (if needed); and education. Please help us keep Teton County as nuisance and disease-free as possible.

Please contact our office at (307)733-8419, if you have any further questions.

Got Mosquitoes?

Do you own property in Teton County? Please complete our landowner permission form so we can continue to provide mosquito service(s) on your property.
Stay informed!  Would you like to know when we will be in your area this summer spraying for adult mosquitoes by truck?  Sign up for our NEW text alert system!
TEXT mosquito22 to 313131

TCWP Volunteer Opportunity: EDDMapS West

Learning how to use EDDMapS West  can be a rewarding volunteer opportunity for Teton County’s outdoor enthusiasts to help the Weed & Pest District locate high priority  invasive plants. This program is designed to increase Early Detection/Rapid Response (EDRR) weed management efforts by helping local volunteers to identify and survey for twelve high-priority noxious weed species.

These 12 species are: saltcedar, leafy spurge, Dyer’s woad, common St. Johns wort, rush skeletonweed, oxeye daisy, common tansy, whitetop, Dalmatian toadflax, yellow toadflax, spotted knapweed, and field bindweed. The first four listed are the highest priority and volunteers are asked to report them anywhere in Teton County.  The remaining eight species are more common and will only be reported if found 50 feet beyond roadsides and ½ mile beyond trailheads. Teton County Weed and Pest (TCWP) maintains an extensive mapping database of weeds present on roadsides and trailheads because most of these species are transported by human activities. Learn to ID these species here!

The volunteers will use the EDDMapS West website and mobile application for reporting of the targeted species.  EDDMapS West was originally developed and launched for the six Missouri River Watershed Coalition headwater states of Colorado, Montana, Nebraska, North Dakota, South Dakota, and Wyoming in September 2010. Thanks to tremendous interest throughout the West, and support from the Montana Noxious Weed Trust Fund and the US Forest Service – State and Private Forestry Program, the system quickly expanded to include seven additional western states (Idaho, Kansas, Missouri, Nevada, Oregon, Utah, and Washington) in 2011.

This project will continue to protect habitat by using the EDRR method for responding to noxious weed infestations while there is a high potential for eradication. Native and desirable plant communities will benefit from reduced competition from  invasives to help maintain ecosystem function thus allowing for a more optimal carrying capacity for wildlife. Because of this cooperative effort, volunteers will help TCWP stay ahead of the spread of invasive species in Teton County. Learn more here!

Love Jackson Hole?

We’d love to see pictures of the way you PLAY in this beautiful area. Let’s connect and share our love of #JacksonHole and how we #PlayCleanGo to protect it for future generations!


You can also join for some fun events happening around the area! Check out our Events Calendar!

Feed Weed Free

So what is the big deal about certified weed free forage?

Prevention is the most economical and proactive method of controlling invasive species by never letting them into this area in the first place. “Feed Weed Free” and “Play, Clean, Go” are the two best ways you can prevent the spread of invasive species.

In Wyoming, Teton County is one of the few county’s with a weed free forage quarantine. This quarantine goes hand-in-hand with weed free regulations on all federal lands and means that importation of uncertified hay/straw is illegal. It’s not just good stewardship to utilize and import/transport weed free, it’s economical too. In the article “Weed Management -The Cost of Doing Nothing” it is noted that if you assume a 30%
expansion rate for an invasive, a 10 year delay in starting control resulted in a $170,000 first-year cost. (Brian Mealor, Assistant Professor, Invasive Weed Ecology and Extension Weed Specialist at the University of Wyoming

Invasive species cost the United States billions of dollars annually, so an ounce of prevention truly is worth a pound of cure. Thankfully the citizens of Teton County had the foresight to support the Weed and Pest District Board’s Hay Quarantine in 1988 (W.S. 11-5-116 and W.S. 11-5-117). This quarantine restricts the entry of non-certified hay or straw into Teton County. The hay quarantine was put into effect to control the entry of infested farm products through implementing a certification program. Certified weed free forage products include: straw, alfalfa/grass hay, forage pellets/cubes, alfalfa hay, grain hay, and grass hay. This act has protected thousands of acres of wildlife habitat in our backcountry and our backyards over the last 27 years. Without it, Teton County would be a very different place today.

Do you need to find where to purchase Certified Weed Free Forage in Teton County? For large quantities, please call Teton County Weed & Pest office at 307-733-8419 Tuesday – Friday 7:30 a.m. to 5:30 p.m. to get information on local growers. Small quantities of alfalfa and grass bales, cubes, and straw can be purchased at Flat Creek Saddle Shop, Jackson Hole Feed & Pet and Big R sells only certified hay cubes. Make sure that any hay you purchase has one strand of yellow and purple twine or a tag on each bale to ensure that it is certified. We’ll see you at the Teton County Fair!

Buy Clean, Plant Clean – A Win-Win for the Gardener and the Ecosystem

For Immediate Release: April 11th, 2016

Contact: Amy Collett

Jackson, Wyoming – Making the decision to buy and plant native species means that you are also deciding not to buy or plant non-native, possibly even invasive species!

Native plants are adapted to the combination of soil type, temperature, nutrients, and rain/snowfall of northwest Wyoming. Once established, they require very little such as: additional water, fertilizer, pesticides, or other chemicals. Even in planned landscapes around homes, commercial developments, or roadsides, native plants require fewer resources. The use of native plants in a garden or landscape can provide economic benefits by a reduction in energy costs, water, and maintenance; ecological benefits by enhancing ecosystem stability and reducing chemical use; and aesthetic benefits with the natural beauty native plants provide. Many of the invasive plant flowers are so pretty that they are commonly mistaken as an innocent wildflower. The more exotic plants we cultivate in our yards and gardens, the higher the chance of those plants escaping into the ecosystem and achieving invasive status.

Preventing invasive species from being planted in the first place is the cheapest and most effective way to keep them out. So how do we do this? What can each and every one of us do to prevent invasive species from being planted here and moved from place to place? We can Buy Clean, Plant Clean!

With positive action we can make a difference in preventing the spread. You can help Stop Invasive Species in Your Tracks by implementing four simple steps into your gardening routine:

  1. BUY native seed mixes and non-invasive plants, beware of phrases such as “spreads fast”
  2. PLANT certified trees and shrubs
  3. CLEAN equipment before entering & leaving a construction or revegetation site

All of us can protect Teton County and Wyoming for future generations! Enjoy gardening this summer and remember to, Buy Clean, Plant Clean!