Posts Tagged ‘form’

WHAT’S IN A NATIVAR?

BY CAROL BECKER

And what isn’t? Designers and pollinators are finding out.

FROM THE JULY 2019 ISSUE OF LANDSCAPE ARCHITECTURE MAGAZINE.

 

Common buttonbush (Cephalanthus occidentalis) is a medium-sized shrub that is appealing in sunny areas of the landscape because of its glossy green leaves; unusual fragrant, round, spiky flowers; and rust-red fall color. It’s especially useful in wet areas and rain gardens where it absorbs excess water and even tolerates standing water. Hummingbirds and butterflies favor the plant for its nectar, and 24 species of birds seek it out for its small, round nuts that persist into winter. This native of the Midwest and East Coast is easily grown and little bothered by pests in the garden. Yet it is not commonly used in built landscapes. Although everything else about this shrub is right, its growth pattern and size are not. The straight species can be quite large at 12 feet high or more, and it has an annoying habit of sending branches in all directions, so it looks willy-nilly rather quickly if it’s not pruned regularly and often.

But here come Sputnik, Sugar Shack, and Fiber Optics, cultivars of buttonbush that represent a tamed C. occidentalis. Cultivars are plants produced by selective breeding or vegetative propagation to achieve better traits for the landscape. Fiber Optics is a species mutation discovered by an inventory employee in the bare-root fields of Bailey Nurseries, says the company’s public relations and communications specialist, Ryan McEnaney. Bailey trialed the plant, a process that takes several years, and brought it to market in 2017. It has a reliably smaller size at five to six feet high and a branching habit that keeps it compact and rounded, while retaining all the desired features of the straight species.

The Fiber Optics buttonbush is what is known as a nativar. The term is not scientific but has value to the industry in (more…)

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BY ZACH MORTICE

The lago at Roberto Burle Marx’s Sítio, which he composed by eye from truckloads of species collected during his botanical expeditions. Image courtesy Julian Raxworthy.

It’s time for landscape architects to re-embrace what makes them fundamentally different.

 

Since its inception, it’s been hard to find much agreement in landscape architecture over the profession’s purpose and how it should work. For some contemporary designers, landscape architecture, in theory if a bit less in practice, is most visible when ecological systems are designed and deployed to remediate the earth, water, air, and biomes, often at an infrastructural scale. And yet, a profession wholly obsessed with infrastructure would seem to miss the trees for the forest.

The Australian landscape architect Julian Raxworthy posits a way forward in his new book, Overgrown: Practices Between Landscape Architecture and Gardening, published by The MIT Press. Landscape architects, he notes, have retreated from the defining element of their corner of the spatial world: the development and management of planting design. Plants, he argues, are defined by their growth over time and the maintenance used to train them. Gardeners (whose ranks Raxworthy once populated) haven’t lost track of this fact. Growth is landscape architecture’s fundamental currency. From there, he launches into a populist call to tear down the blue collar/white collar divide between gardeners and landscape architects. Raxworthy (who is headed to Dubai, United Arab Emirates, after living in Cape Town, South Africa, for five years, teaching at the University of Cape Town) seems to admire messiness and rebellion against the bespoke and delicate. That preference is not surprising if you chat him up about his days as a music writer in the 1980s in Sydney, attending shows by Public Enemy and Dead Kennedys. Of one of his case study projects (created by a designer who never studied landscape architecture), he writes: “As a gardener rather than a landscape architect, the only plans Korte produced for the project were to satisfy the authorities. All other decisions arose organically through spending four years on site with a gang of four young German laborers who had returned from Brazil and smoked marijuana constantly. He looked back on this way of working with some nostalgia, saying that this time on site was the height of his career.” (more…)

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