The Marjorie G. Rosen Seasonal Walk is the place to be as we boldly move into summer. You’ll see an abundance of beauty among the white lace flowers (Orlaya grandiflora), moor grass (Molinia caerulea ‘Moorhexe’), rusty foxglove (Digitalis ferruginea), queen of the prairie (Filipendula rubra ‘Venusta’), Chinese astilbe (Astilbe ‘Vision in Pink’), and Culver’s root (Veronicastrum ‘Adoration’). And that’s only the beginning of this season of verdant color.
Seasonal Walk’s enthusiastic growth creates a spectacle of colors and shapes in summer, something we’re always willing to encourage as the lushness of the season takes center stage in the Garden.
The summer spectacle of Seasonal Walk – Photo by Ivo M. Vermeulen
While most of the Garden is being put to bed, our Seasonal Walk—designed by Piet Oudolf—is still putting on a notable display as the winter approaches. This is thanks to Oudolf’s naturalistic design which incorporates many plants that senesce well and provide interest even after they’ve passed their seasonal prime.
A week or two ago I was working on the Seasonal Walk, tidying up the border with my colleague, Katie Bronson, and we were admiring some of the sturdier perennials that still looked good even into December. One of the most striking features of the Walk at the onset of the hibernal months is the tall purple moor grass (Molinia caerulea ssp. arundinacea ‘Transparent’). This grass played an important role earlier in the season as it shot up to nearly six feet, towering over many of its neighboring perennial brethren. ‘Transparent’ has airy flowers with an open habit and long-lasting seedheads.
The stems of ‘Transparent’ turn into a vision of glowing embers late in the season, when they take on golden, orange, and raspberry hues. Those of you with a watchful eye may have noticed as you strolled down the border that some of the stems on certain grasses were upright, sturdy, and colorful, while other, similar grasses looked somewhat worse for wear and had only golden yellow stems. Katie told me that along with ‘Transparent’, some tall more grass (Molinia arundinacea ‘Skyracer’) had been planted. Presumably these plants will be removed in the spring and replaced with more ‘Transparent’. It was difficult to distinguish the two during the growing season, but their disparities became apparent in the fall.
