Greenwater Trail (#1176) – Norse Peak Wilderness Area – 9/10/14

Non-native plants were observed in two locations along the 3 mile section of Greenwater trail within the Norse Peak Wilderness Area. The first location was less than 0.2 mile from the wilderness boundary, a large camp area adjacent to Greenwater Creek. The somewhat wet area near the creek hosted several non-native species: Canada thistle (Cirsium arvenes), Creeping buttercup (Ranunculus repens), Common dandelion (Taraxacum officinale), and Greater plantain (Plantago major). Common hawkweed (Hieracium lachenalii) and Wall lettuce (Mycelis muralis) were found on a small meadow edging west side of the camp area away from the creek.

The second location, a large moss-covered boulder at edge of the trail, about a mile on trail from the wilderness boundary, was dotted with Wall lettuce (Mycelis muralis) plants in various phenophase.

All the non-native species that were present within the wilderness area were also observed outside the wilderness on the way to the Norse Peak Wilderness Area. Other non-native species observed outside the wilderness were: White clover (Trifolium repens), Nipplewort (Lapsana communis), Common veronica (Veronica officinalis), Broadleaf dock (Rumex obtusifolius), Forget-me-not (Myosotis sp.), Burdock (Arctium minor).

C. Miltimore

Native hawkweed along Pacific Crest Trail in Norse Peak Wilderness – Aug 6 & 7

While the non-native plants reported for the trail were pretty boring dandelion and narrowleaf plantain, this was a great trip to observe and learn native hawkweed in field.

Slender hawkweed (Hieracium gracile) were widely found both in subalpine forest and open meadow. Their flowers are small and can be missed easily.

Scouler’s hawkweed (Hieracium scoulerii) were locally abundant in open area like meadow, low shrubby meadow , tallus slope edge. They seemed to prefer east side of the crest.

Their flowers are larger and showy. Their form are pretty variable, some look almost like hairy version of slender hawkweed with tiny stem leaf, while others look more robust with obvious stem leaves and branched stems.

White hawkweed (Hieracium albiflorum) were sparsely located compared to other two native hawkweed.

I found some invasive hawkweed, Common hawkweed (Hieracium lachenalii), outside of the survey area on the way home.

It was déjà vu for me: I noticed a big infestation of Wall hawkweed (Hieracium murorum) while we were driving back home from another weed survey trip in Pierce Co.

Carol M.

hawkweed/Skyline Divide #678/Mount Baker Wilderness

Spotted several large patches of these "hawkweed" flowers along the Skyline Divide trail yesterday. They looked suspiciously invasive yet I could not positively identify them. The stems did contain a milky juice. I did not notice any stolons. All plants were less than 1 foot tall and had up to 5 flower heads per stalk. They were budding but not in the open flower stage yet. I’m wondering if they are the same flower Sarah K. posted about or the invasive yellow hawkweed in the guide booklet. These were at 5800′ elevation.

Sharon

Mystery orange flower/Goat Mountain/Gifford Pinchot NF

This is out of our survey area, but I thought I would share in case anyone else encounters this plant. I found this suspicious orange flower in abundance while backpacking in Mt. St. Helens National Volcanic Monument. My first instinct was that it was orange hawkweed – but the leaves don’t match up and black hairs were not prominent. The leaves were *deeply* toothed/lobed. Doesn’t quite match with , either, the only other likely candidate that my guidebooks point too…. Any ideas? – Sarah K.

Hawkweed/Curry Pass/Henry M. Jackson Wilderness

We found this yellow-flowered hawkweed growing at Curry Pass, elevation 3900′. There was an abundance of this flower, but no stolons to be found. Leaves were smooth, not toothed. We were thinking this is Scouler’s hawkweed, but would like a second opinion. We took both a sample and a location on this plant. – Sarah K.

“What weed is this?”

A weed watcher was recently stumped when she found noxious weed flagging on a plant that looked like a native elderberry bush and sent along this photo. I thought I would share because it’s a great reminder that flagging is most often attached to a woody stemmed perennial plant nearby the weed of concern. If you encounter flagging, you can look to see if the surveyor wrote a note on the flagging about the species and location. Often flagging will mark an area that was controlled. In this case, Sarah C. informed us that the flagging was most likely marking a hawkweed infestation that had been previously sprayed. By recording data about the presence of the weed (and making note of the flagging), we can help the Forest Service understand if the species was indeed controlled or if it needs further attention. Happy weed watching, all! – Sarah K.