Since western poison oak (Toxicodendron diversilobum) typically loses its leaves in the Fall and doesn’t start leafing out again until after the first of the year, you might be surprised to know that it is coming out now, as I was (see photo taken today). Chalk it up to global warming, I suppose, but the result is that poison oak season is elongating — it’s starting earlier and likely ending later, although I don’t have evidence of it.
This is bad news for hikers, and the stewards who try to keep it cut back off the trail. But since I haven’t yet had a chance to get out there with clippers (perhaps tomorrow), be careful. I’ve seen a few sprouts right at the edge of the trail.
Part of what makes poison oak tough to spot is that it presents differently at different times of year and in different growing conditions. To see some of this variability, see this web site, which has a number of pictures of poison oak in various stages of its life and in different growing conditions. Also, poison oak will often vine up into bushes and small trees, blending in with the other vegetation, which makes it even harder to spot. I’ve often missed noticing poison oak in such situations, even when actively looking for it.
Our program of control is limited to keeping it about 3 feet off the trail, as since it is a native species we aren’t interested in eradicating it like we are invasive species such as Italian and Yellow Star thistle. So if you stay on the trail you should be safe, at least after I get out with the clippers, but it doesn’t hurt to be vigilant.
Lately I’ve noticed that Italian Thistle has been coming up, since recent rains have kept the soil moist and we haven’t had freezing temperatures at night. In the past, I haven’t started pulling it until February or March, but I see no reason to wait. When the soil is moist it’s easiest to get it out by the root, and since there is no danger of it going to seed it can be simply tossed aside. Later, we will need to bag it and carry it out, which is no fun.
Although we’ve been making very good progress with Yellow Star Thistle (YST) after half-a-dozen seasons of concentrated effort, and we may actually be close to declaring victory (fingers crossed!), Italian Thistle has, in a number of cases, apparently been moving into the new territory cleared of the YST. This is alarming, as Italian Thistle is even more dangerous than YST, as it will grow anywhere. At least YST is limited to sunlit meadows.
Italian Thistle has essentially overrun the Montini Preserve, so my only goal there this year is to keep it off the trails so it doesn’t bother hikers. On the Overlook Trail property, I will start the same way by first concentrating on the trail edges, but then I also hope to be able to work on the Upper Meadow, as there are clumps there that threaten to spread and coalesce across the entire meadow unless it’s controlled.
So if you’re out on the trail and see what appears to be a gardener pulling weeds, it’s just me, keeping up the ongoing war against invasive species. Maybe say Hi.
Roy Tennant, Overlook Steward, was awarded a gift for the enormous amount of hours he has spent,combatting invasive species including poison oak, and caring for the Trail.
A huge thank you goes to our current chairperson, Joanna Kemper, who is stepping down after 8 years of leadership of the Stewards.
After the Stewards meeting on Tuesday we celebrated Joanna’s dedication to our beloved trail with a party.
Ezrah Chaaban, Chief of Staff to State Senator Bill Dodd presented Joanna a Senate Resolution Certificate thanking Joanna for her service on behalf of Senator Dodd.
We toasted her with bubbly and also presented her with a Hiker’s Notebook with photos and memories of her tireless leadership.
Thanks Joanna, and see you on the trail.