Tag Archives: pruned

Transforming a concrete slab into a garden

Crack Gardens was a winner of the American association of landscape professional award

in the residental design category.

The Crack Garden

Materials: existing site, soil amendment, plants; Size: 800 square feet; Cost: $500; Builders: homeowners

From the project’s statement.

The Crack Garden is an exploration of the identity of site and the clarity of intervention. Pre-existing places have an inherent identity that is based on their history, materiality, and activities. The design is conceived as an intervention that functions as a lens, altering perception of a place rather than completely remaking it. The intervention can reveal the physical and material qualities of the place, and/or become a catalyst to incite new program activities. In the case of The Crack Garden, completely remaking the garden was highly unlikely because of the tiny budget. By fully embracing a strategy of design as intervention, the garden relies on its previous identity as much as it does on the changes that were imposed.

The conceptual basis of The Crack Garden is to reveal the potential for beauty that underlies the concrete and asphalt that is the predominant ground plane material of the urban landscape. The interventions into the site of The Crack Garden were primarily actions of removal rather than the addition of new layers and material. By eliminating portions of the existing concrete and exposing the soil beneath, potential is released, and new opportunities for the garden arise.

Although minimal in scope and budget, The Crack Garden is refined in its creation of well-programmed spaces for the residents of this four-unit building. The edges of the garden are well-defined by existing buildings and new fences, including a stainless steel cable trellis that stretches continuously across the top of the fence and continues across the neighbor’s garage. The side of the garden along the residents’ building is kept open for social activities, and plants selected for the cracks can tolerate foot traffic, which allows for multiple uses throughout the garden. A Jacaranda tree adds scale, creates an anchor for the garden, provides needed overhead definition to help contain the space, and offers filtered shade and summer color. Potato Vine is planted along the fences and back wall to grow on the cable trellis, and a beautiful Five-Leaf Akebia vine creates textural interest on the back wall. The planting within the cracks is somewhat random, changing regularly depending on the whims and desires of the resident gardeners, but usually includes a wide range of vegetables, herbs, flowers and weeds.

via Pruned

Notes on desiging social-ecological systems

Pruned on the rehabilitation of degraded landscapes presents Pedreres de s’Hostal:

Pedreres de s’Hostal is a disused stone quarry on the island of Minorca, Spain. In 1994, the quarry saw its last stonecutters, and since then, the non-profit organization Líthica has been hard at work transforming this industrial landscape into a post-industrial heritage park.

Conservation Magazine’s Journal Watch reports on a recent paper Willis, S.G. et al. 2009. Assisted colonization in a changing climate: a test-study using two U.K. butterflies. Conservation Letters DOI:  10.1111/j.1755-263X.2008.00043.x, which describes a successful assisted colonization:

Based on climate models and a survey of suitable habitats, scientists introduced 500 to 600 individuals of two butterfly species to new sites in England, miles away from what were, in 1999 and 2000, the northern limits of their natural ranges. After monitoring for six years, they found that both introduced populations grew and expanded their turf from the point of release, similarly to newly colonized natural areas.

The butterflies’ success outside of their usual limits suggests that their naturally shifting distributions had been lagging behind the pace of climate warming, the researchers conclude. The results also bode well for the careful use of this sometimes controversial technique for other species threatened by climate change. After all, wildlife can only run so fast and for those species moving up mountains to escape the heat, there’s only so far they can go.

MacArthur Foundation granting $2 million to help ecosystems and human communities adapt to the effects of climate change. On Gristmill:

the IUCN and the World Wildlife Fund — will use it to establish a new Ecosystems and Livelihoods Adaptation Network. Details on the network are still being hashed out, but it’s intended to be a resource for promoting best practices to conservation groups, governments, and others. It will aid projects such as creating protected corridors to help mountain-dwelling animals migrate to higher elevations and restoring natural barriers on coastlines, such as mangrove forests.

On Gristmill, futurist Jamais Cascio posts his recent reflections on geo-engineering in response to the detailed comparison between different geoengineering strategies a writes Geoengineering is risky but likely inevitable, so we better start thinking it through:

If we start to see faster-than-expected increases in temperature, deadly heat waves and storms, crop failures and drought, the pressure to do something will be enormous. Desperation is a powerful driver. Desperation plus a (relatively) low-cost response, coupled with quick (if not necessarily dependable) benefits, can become an unstoppable force.

If we don’t want to see geoengineering deployed, we have to get our carbon emissions down as rapidly and as widely as possible. If we don’t — if our best efforts aren’t enough against decades of carbon growth and temperature inertia — we will see efforts to do something, anything, to avoid global catastrophe.

On Worldchanging Alex Steffen argues that Geoengineering Megaprojects are Bad Planetary Management:

Many of us oppose geoengineering megaprojects, not because we are afraid of science or technology (indeed, most bright green environmentalists believe you can’t win this fight without much more science and technology), but because these kinds of megaprojects are bad planetary management.

It’s bad planetary management to take big chances with a high probability of “epic fail” outcomes (like emptying the sea of life through ocean acidification). It’s bad planetary management to build large, singular and brittle projects when small, multiple and resilient answers exist and will suffice if employed. It’s bad planetary management to assume that this time — unlike essentially every other large-scale intervention in natural systems in recorded history — we’ll get it right and pull it off without unintended consequences.

Jamais and Alex debate their points a bit in the WorldChanging comments.

Slow ecological art

On Pruned Alexander Trevi describes the sculptor David Nash‘s art created from following the movement of a wooden boulder down a stream. Nash tried to use the river to move the wood to his studio, and when it became stuck he documented the movement of the wooden boulder downstream. The 25-Year Riverine Journey of a Wooden Boulder Carved out of a Felled 200-Year-Old Oak Tree:

“For 25 years,” Nash writes, “I have followed its engagement with the weather, gravity and the seasons. It became a stepping-stone into the drama of physical geography. Spheres imply movement and initially I helped it to move, but after a few years I observed it only intervening when absolutely necessary – when it became wedged under a bridge.”

wooden boudler 2


The journey is so extraordinary — made more so perhaps by the fact that it’s so well-documented — that we can’t help but quote the rest of Nash’s accounts:

During the first 24 years it moved down stream nine times remaining static for months and years. Sedentary and heavy it would sit bedded in stones animated by the varying water levels and the seasons. Beyond the bridge its position survived many storms, the force of the water spread over the shallow banks did not have the power to shift it. I did not expect it to move into the Dwyryd river in my lifetime.

Then in November 2002 it was gone. The ‘goneness’ was palpable. The storm propelled the boulder 5 kilometres, stopping on a sandbank in the Dwryd estuary. Now tidal, it became very mobile. The high tides around full moon and the new moon moved it every 12 hours to a new place, each placement unique to the consequence of the tide, wind, rain and depth of water.

In January 2003 it disappeared from the estuary but was found again in a marsh. An incoming tide had taken it up a creek, where it stayed for five weeks. The equinox tide of March 19 2003 was high enough to float it back to the estuary where it continued its movement back and forth 3 or 4 kilometres each move.

The wooden boulder was last seen in June 2003 on a sandbank near Ynys Giftan. All creeks and marshes have been searched so it can, only be assumed it has made its way to the sea. It is not lost. It is wherever it is.