Garden Design: Flying Buttress

About 3 weeks ago we installed a pair of flying buttresses in a potager I designed.
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Choosing an evergreen shrub, then sourcing it in 3 different sizes proved impossible locally, state wide, region wide, and flyover country wide.  Finally, sourced on the west coast.  It's the new normal sourcing plants for real gardens.
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Flying buttresses were not part of the college curriculum for horticulture, in USA.  Of course I discovered them studying across Europe for decades.  1st garden in 1st country toured, literally.  No one seemed to have a name for them, nor did any of my peers seem as excited about them as I was/am.
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Their use, below, quite apparent.  These, below, are the high end of fancy.



Pic, above, here.
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Evergreens, above, pay the rent (for me), the herbaceous perennials do not.  Peaking for a mere 2 weeks/year, deadheading, dividing, weeding, staking, blank in winter.  Nope.  Instead, I would fill their space with flowering shrubs, a succession throughout the year, and bulbs.  Perhaps a lone flamboyant Clematis roguchi clambering a single buttress, as it dances with sunlight.  Yes, now I'm pleased, and amused.  With no down time & significantly less labor.
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Garden & Be Well,   XO T