Marin Mountain Goat Brigade

Marin Mountain Goat Brigade We are dedicated volunteer French broom and invasive pullers helping to restore native biodiversity in our parks and lands

Earth Day weekend  #2 bull thistle removal work. It's nasty work as this stuff loves to grow where poison oak is at its ...
04/27/2026

Earth Day weekend #2 bull thistle removal work. It's nasty work as this stuff loves to grow where poison oak is at its worse. Special thorn resistant gloves are needed as bull thistle needles leave an awful sting that lasts for days. The Japanese knife/digging tool w/gloves in the picture is the BEST! Love that tool!

Bills Trail is the only place in the State Park with invasive thistle issues. It was brought in years ago with infected hay at the Devil's Gulch horse stalls at the base of the trail. We adopted the trail about six years ago and have been returning each spring working to exhaust the seed bank. A few years ago, by early summer you could not walk the trail without getting stung as the bull thistle was so out of control. Making a lot of cumulative progress removing bull and purple star thistle along the 4 mile, 1,000' climb.

The challenge is that there are other native thistles that look similar. It takes some training to tell them apart. The tall one is called a Short Styled Thistle and only grows in a few spots higher on the trail.

Busy pulling invasive bull and purple star thistle on Bills Trail for Earth Day 2026!
04/20/2026

Busy pulling invasive bull and purple star thistle on Bills Trail for Earth Day 2026!

We've been a bit quiet as personal obligations have taken priority.  Went back to an area we worked extensively in the t...
02/02/2022

We've been a bit quiet as personal obligations have taken priority. Went back to an area we worked extensively in the two past years. Even though there are a lot of tiny broom plants coming up, the biodiversity looks amazing! Did a little clean up work and will now leave the site alone for the next year or two. This area was unrecognizable before we came through.

12/12/2021

Hi folks! We've been quiet during the dry season. With the rain coming in this week, we are going to pick up our fall/winter broom pulling activities again. Let us know if you'd like to join us!

An excellent article By GRACE MAHANNAH | UC Master Gardeners of Butte County on why it is so important to avoid introduc...
09/12/2021

An excellent article By GRACE MAHANNAH | UC Master Gardeners of Butte County on why it is so important to avoid introducing invasive species in your gardens and to plant natives that support pollinator species.

"Invasive plants can “disperse, establish and spread without human assistance,” and they cause disruption of natural ecosystems. The worst invasive species are called landscape transformers because they substantially alter the “character, condition, form and nature of the invaded habitat,” consuming resources needed for native plants to survive. When invasive plants replace native plants in the wild, wildlife that feed on the native plants suffer and may become endangered, according to UC IPM Pest Notes: Invasive Plants.”

"California native plants attract wildlife that use these plants as their natural habitat. For example, the many pollinators that flock to native plants can improve fruit set in your home orchard and yield in your vegetable garden. A variety of native insects and birds can reduce populations of mosquitos and plant-eating bugs. By using native plants, you support native wildlife and help preserve the balance of natural ecosystems, according to “Benefits of California Native Plants.”

Plants define the landscape. In California, besieged by the twin threats of drought and wildfire, the choice to grow native versus non-native plants is attracting more attention than ever before. W…

Did a bit of dry season pulling yesterday trying to finish up one of the areas we've been focusing on. Lots of poison oa...
05/18/2021

Did a bit of dry season pulling yesterday trying to finish up one of the areas we've been focusing on. Lots of poison oak this time of year. Thank goodness for Tecnu! 😊

04/28/2021

We found a hidden broom stand with lots of very large, mature plants basically on a cliff side. Tough, tough work. We got a lot pulled yesterday but was so tired, forgot to take pictures of what we accomplished. Next time...

Some before and after. This one took one of us about 40 minutes. Happy we have completed some of these sections before t...
04/28/2021

Some before and after. This one took one of us about 40 minutes. Happy we have completed some of these sections before the dry season!

Happily finished up a satellite area we've been working on since the winter. This one is away from the other major infes...
04/18/2021

Happily finished up a satellite area we've been working on since the winter. This one is away from the other major infestations we've been hitting regularly. Lot of focused work in a concentrated area with beautiful plant life and diversity. Unfortunately there is also an abundance of poison oak mostly concentrated by the trail. Not much further down making it much easier to work.

The photos are before and 30 minutes later. Anyway, good workout. Was totally drenched by noon and out of there.

Unexpectedly ran into some grandfather/mothers so large even the bigger tool might not have helped. The smaller one in the picture, no way. Ended up cutting all the major root connections leaving stump. Should take care of it hopefully.

Off-Trail Hiking
Here is the issue... Mature broom stands form right where there are old, historic, or current but very seldom used social trails. Having seen this same pattern so often now in different parts of the county, there is no doubt whatsoever that off-trailing is a cause of invasive spread. With the terrain, creek proximity and soil richness, it is especially true here in this canyon area.

Off-trail hiking has impacts that are not always obvious.

Beyond the erosion it can sometimes cause and the trampling of rare plants hikers don't even realize they are stepping on. The larger issue is (unintended) habitat destruction. Off-trail enthusiasts need to be educated that yes, they are cause of invasive spread bringing broom seeds attached to their clothes, boots and dogs. In this part of the country, french broom is a take-no-prisoners type invasive. It makes it very difficult to eradicate these infestations. What begins as a plant here or there eventually overtakes natives and strangles it all.

I am not totally discouraging all off-trail experiences. There are places where the activity may not cause appreciable impact, depending on the sensitivity with which it is approached. In most cases, we need to stick to system trails to minimize impacts we don't even realize we are causing. This is assuming we are all out there because we love nature and want, in most cases, see it protected from harm.

Little things add up over time. Land managers everywhere are having this exact problem to deal with. Redwoods, for example have a shallow root system. Among of the most damaging activities is soil compaction from many feet over time. It additionally destroys accompanying plant life.

Muir Woods with about 750k visitors per year resolved the issue a few years ago by installing a raised walkway among a lot of other impressive ongoing work to protect their first-growth redwood groves and coho salmon habitat.

With the COVID phenomenon, more people are out than ever before. That's healthy, that's good. Even as the pandemic begins to fade these new habits will stick with a lot of people. But the impacts are becoming clear. There is a need for greater education so, as the saying goes, we do not end up loving our parks to death. If you made it this far, thanks for reading. : )

Got out on this nice Saturday to do some more restoration along Tucker Trail. This evolved into being a particularly har...
04/11/2021

Got out on this nice Saturday to do some more restoration along Tucker Trail. This evolved into being a particularly hard day pulling a tough, old, well-established stand on a steep not-so-stable slope. There is broom here as big, thick and tall as I have ever seen. More like trees than bushes. Several big ones rendered my trusty pulling tool useless. I either could not get the tool around them or could not budge them. The big ones over 1" diameter can be cut with a handsaw. They will not reestablish unlike the smaller plants which must be pulled by the roots which we do the vast majority of the time.

Some before/after shots. The giant pile of yellow in the after picture is the result of somewhere north of two hours of sweaty, tiring, satisfying effort. That shower afterwards sure felt great!

Hey, always looking for local volunteers if you don't mind getting a little bit of earth on you.

04/09/2021

Looking for broom pulling volunteers! Need some really good, satisfying outdoor exercise away from others? We have the solution! Contact us if you are interested in going out sometime.

Address

Kentfield, CA

Telephone

+14159022388

Website

Alerts

Be the first to know and let us send you an email when Marin Mountain Goat Brigade posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Organization

Send a message to Marin Mountain Goat Brigade:

Share