I’ve spent several days scanning the Overlook Trail and Montini Preserve properties for the invasive Yellow starthistle (YST). Although it’s still early in its season, it’s clear that it has essentially been eradicated from these two properties. I will still be looking for it this season and next, but I’ve pulled so little so far it seems nearly pointless. After over a decade of fighting this scourge, I expected to be able to celebrate this major accomplishment.
But I can’t.
I’ve long intended to bring my recent campaign of tread renewal/trail smoothing from the Overlook Trail to the Montini Preserve, and today I finally did. There had been a short section that I had had my eye on for quite some time, as it checked two big boxes for needing attention: 1) a really rocky and awkward trail, and 2) a section so awkward that hikers and runners had started a mini trail around the awkward part, thus needlessly widening the trail.
Therefore this morning I got our trail wagon out of our toolshed in the Mountain Cemetery, loaded up some buckets with aggregate, threw some tools and all the rest in the back of my SUV and headed up to the trail. Entering from Norrbom Road on Rattlesnake Cutoff, I pulled the wagon into the middle of the Montini Preserve to the section I wanted to fix.
We’re in the very early days of “Thistle Season,” which sadly lasts from November into August. That’s right, those of us who struggle against thistle get something like 2-3 months off a year. And knowing how relentless invasive species can be, that actually seems generous to this obsessed lunatic. Italian thistle starts coming in as early as the rain does while Yellow starthistle doesn’t come in until much later in the season, like around May and extending into August.
Right now most of the Italian thistle looks totally tiny. Thankfully, I’ve come to recognize Italian thistle as soon as the third leaf comes in. This is because the third (and then later, the fourth) leaf comes in with spikes (see picture). It’s completely unique among the plants found on the Sonoma Overlook Trail and the Montini Open Space Preserve, so you know you have it dead to rights.
And the great thing about pulling Italian thistle now is that all you need to do is to pull it and toss it. Later, when it goes to flower, we will need to bag it up and carry it out. We dump our bags beside the dumpster in Mountain Cemetery next to the City Public Works Yard. Most years the pile gets to be about ten feet in circumference and about five feet high.
But before we even begin to create that pile we’ve pulled thousands of plants and tossed them aside. Starting with the plants that show that tell-tale third leaf.
This morning six volunteer trail stewards met to rebuild two of our worst sections of trail on the Overlook. These sections are just below the top meadow and are rocky and difficult to traverse—particularly for runners. Prior to today, four wagonloads of packable gravel had been hauled up to the job site. Even so, we could have used more.
After about three hours of work we had rebuilt the two sections of trail to our satisfaction (at least for now, there are a few mop-up jobs left to finish off the segments).
In rebuilding these parts of the trail, we essentially went through several phases:
At the start of our work I had set up a time-lapse camera to capture a greatly sped up version of the morning, which I then edited into a less-than-five-minute video that ends up being slightly comical. I hope you enjoy it.
Today I found an Italian thistle (Carduus pycnocephalus) plant (see picture). It’s the earliest I have found it, with the previous record being November 10th. I fault the early rains we’ve had this month.
What this means is that I will now turn the bulk of my trail efforts to pulling it from along the trail, primarily on the Montini Preserve, where we have yet to push it back. Last year, sadly, I didn’t even get close to achieving that highly desirable result. My hope is to do a lot better this year, which would mean removing all of the trailside plants by about June.
This is going to be a long eight months.
Sonoma Overlook Trail • Montini Open Space Preserve 