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IVY Bionetting installed!

 

On October 31st 7 folks worked on installing the crocheted bionetting as an anti-erosion experiment. A slope at a fairly steep grade was chosen  west of our restoration site, a place where ivy has grown in the past and erosion had begun- the top meter of the bank was mostly mineral soil, not alot of organic soil, and lower down the slope was mushy from all of the recent rain, lots of fertile soil,  a few swordferns and miners lettuce and other small plants were present. Our  process went something like this:

Waddles were made with red dogwood, cottonwood and pacific crab apple.

binding wattles

biodegradable jute was used to bundle native cuttings into waddles.

Trenches were dug for the waddles to be buried  3/4 under ground, trenches were also used for walking the slope as we worked to minimize sliding and erosion damage from working on the slope. Waddles were buried with mulch and a few sprigs left unburied that will leaf next spring. The buried waddles will root and stabilize the hill with time.

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binding branches

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driving in cedar stakes to waddle

waddle bundle in place in trench
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twig ends pulled out from bundle for new growth, bundle underground will root.

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cedar stakes hold waddles from sliding down hill.

Ivy netting was laid across the top of the slope, with the bottom staked first, the netting was held up and a layer of leaves, mulch and more leaves were laid down below netting, and cedar stakes at the top and sides to hold in place. Our hope is that the leaves will compost and with the mulch in place provide some organic soil for the plantings to assist growth and rooting.

walking a lower trench while staking ivy netting

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ivy netting stretched out, the first waddle was about 1 meter longer each side

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netting "catching" mulch and leaves for containment.

cedar stakes at top of netting along roadside.

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netting in place!

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plantings were placed along the restoration slope waddles, and planted in the netting

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existing swordfern on site was carefully worked around and pulled through the netting.

the netting blends in and is only visible for those looking closely that know it is there- a quiet art intervention....

 

Inventory of plants added to site:

3 swordfern                                   1 nootka rose

2 pacific nine bark                      5 kinnikinnick

1 vine maple                                   3 ocean spray

1 baldhip rose                                2 salal

2 oregon grapes                             2 spiny woodfern

2 red flowering current

1 thimbleberry

2 goatsbeard

2 salmonberry

2 cascara

1 elderberry

Wattle Berms installed:

#1 @ 1.7 meters

#2@ 3.2 meters

#3@2 meters

#4@ 6 meters

#5@ 2 meters

Ivy netting measured: 1.4meters X 4.7meters

total area of restoration = 4meters X 10.9 meters

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September: Final Install

For the September workshop, David Gowman filled in for me while I was at the Roundhouse Community Centre for the Dig In Environmental Art weekend. Previously, David and I had met at the site, and  talked about what was already happening. We  surveyed how much material we had in processed and dry ivy, and how forms could possibly work both ecologically with the environment, ( bird perches/nurse logs etc.) as well as in a sculptural language. A huge thanks to David as well as  Jonanne from SPES for assistance.

Final Installation sept 09 photo credit: David Gowman

Final Installation sept 09 photo credit: David Gowman

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First Ivytree pictures

small spool knitterend of day assemblymarch-09-022

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The Ivy Tree

Saturday March 28th will be our first day working on creating an artificial nurse log. Nurse logs are also called “course woody debris”, and are trees that have fallen down, but still play a huge part of the ecology of the forest, decomposing, hosting seedlings that fall from other trees, providing nutrients to the soil and seedlings, as well as all of the animals that find shelter in the rotting wood.
By using a technique called corking or spool knitting, we will crochet rings of various sizes that can be joined together, and eventually make the shape of a large tree. The crocheted, tree-shaped form will be dried out ( to ensure the ivy is dead), stuffed with mulch from the park, and left on site at the paths edge. Some seedlings may be planted in the sides of the form, a smaller “nurse log” will be made for our control site.

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