Unless someone else wants to stay in touch with D__ Park’s stewards D__ & T__ (emailed in the cc below), I’ll do it. They have willows that they need cut back from time to time. M__ hooked us up with them for us to harvest tall livestakes to stake in Midslope’s blackberry patch as an experiment. They’d have to go in deep enough to reach moisture, beneath the blackberry roots, and be tall enough to compete for sun & space, maybe 8 – 10 feet. The idea is to stake densely for the roots to stabilize the slope and to hopefully begin competing with blackberry. Once roots are developed it’s also safe to remove the blackberry if we choose.
The other idea M__ mentioned was trying willow fascines. If you’re not familiar, this is where, here, let me find a pic.
Except the willow stakes are buried in a trench. One question is, will there be enough water. Another is, will filtered sun be enough. The advantage to filtered sun, as P__ says, is there is less drying of the soil.
M__ also mentioned the idea of clearing openings for conifer planting, but these would need to be further apart, slower to take, and require regular maintenance and liberating.
So we have 3 potential factors to experiment. 1. Tall willow staking. 2. Willow fascines, and 3. Spaced, maintained conifers. We can try any or all of them. It would be nice to photo document as we go. We could put a page of the experiment on our website if we want.
Whenever D__ & T__ would like harvesting, if not this winter then hopefully next, we’d prune them down at the base & haul them up to midslope. Sounds like M__ is preoccupied with other stuff, “I don’t need to stay in the loop” & wants us to just report on annual walk throughs.
Field Research Case Study: English Holly (Ilex aquifolium) Sprout Herbicide-Free Eradication
Rio Montana and P__ W__
Background – Shortly after European American migration into the Seattle area, settlers promoted the introduction of English Holly, Ilex aquifolium in forests. In time Seattle area residents and organizations noted forest understory impacts and began using a variety of methods to control English Holly with varying levels of effort and success, including sawing trunk, digging out root ball, girdling and frilling with and without herbicide treatment, and trunk herbicide injection. Still, efforts to officially recognize the full extent of understory impacts and respond accordingly were temporarily halted with behind the scenes political uprisings by English Holly selling nurseries. This was countered with the 2014 English Holly Symposium presenting the impacts through scientific research and reports.
Primarily based on a 2013 English Holly Herbicide Treatment Study, by 2016 S__ Parks’ protocol for specific woody invasives controlled by stem injection with the herbicide imazapyr included English Holly.
If we do this P__, next I want to get into the particular circumstances of our case study experiment using manual methods for dealing with cut holly stumps that are throwing up tons of sprouts in areas critical to cause no or little soil disturbance (by digging out roots). We can just write it up as it goes, from repeat cutting sprouts & results, to adding burlap layers & results. If you don’t have time for this, I may do it on my own. Just let me know.