The Seattle Times recently had a front page story on what Seattle’s new waterfront might look like. Back in 2009, the city began work on this project, hiring “rock-star landscape architect James Corner, designer of the celebrated High Line in New York City” to develop the big picture. (Note: I’ve been to the High Line and have posted on it before – it’s fantastic.) As you can see from the linked article from the Times, many of Corner’s architectural renditions for the greenway are presented, including this one:
For those of you not familiar with Seattle’s waterfront, it’s built right next to Puget Sound, a huge inland sea connected at its mouth to the Pacific Ocean. So it was with much surprise that I saw what appear to be Douglas firs (Pseudotsuga menziesii) along the cobbled beach. Douglas firs are not particularly salt tolerant, nor would they be very happy with the tidal action or seasonal storms that will flood the beach on a regular basis. Even if these were not Douglas firs (native to Seattle) but some other salt-tolerant species (mangroves?), it’s doubtful they would look as picturesque as the drawing shows. Neither would the rest of the trees in the area, whose root zones would normally extend far into saline soils under the beach and sound.
Am I being picky? No, I don’t think so. Landscape architects should know better than to use plantings as decorations for their designs, like candy sprinkles on cupcakes. Plants aren’t just design elements. Choosing plants that are appropriate to a site is a science as well as an art.
I can’t believe that in the five years that Seattle’s been working on this project that horticultural science hasn’t been a major component of landscape planning.