The Astilbe family is one of the politest collection of flowering perennials. Not only do these plants grow almost maintenance-free, but they bloom in colors that cooperate, behave, and blend in well with practically every garden color scheme.
With bloom periods ranging from June until September, one can enjoy this plant all season long. In addition, the heights of different Astilbes vary so greatly, that an assorted collection, randomly planted in a flowerbed, might resemble scattered notes on sheet music. No wonder landscape architects use them, albeit sparingly, when they are obliged to add neat flowers to their serene, green plant compositions.
Astilbes grow in, tight, upright clumps that increase in size slowly. There are no spreading roots systems that require controlling, no messy sprawl, no staking of its flowering, feathery spikes, almost no pest, bug, or fungus problems, no additional nutrients required, no winter protection, and in colder climates, no exponential growth from one season to the next.
In fact, when the blooms have dies, the elegant, brown spiky seed heads add texture and vertical architectural detail to the garden. Furthermore, the Astilbe colors, even though they span every shade of pink, mauve, violet, red, peach, and cream - to - white, never appear garish, bold, or offensive.
However, one Astilbe does not conform to this modesty. The variety Amethyst is a scintillating pink extravaganza. It sizzles in the sun, where it ought not to be, like a display of fireworks, and glows intensely in shade and part - shade in vivid tones of lavender - pink. As a specimen plant, it is breathtaking; and when combined with other perennials in the garden, it is transformational.
At maturity, A. Amethyst reaches 40 inches in height and two feet in width. It performs best in a moist garden situated in part to full shade. However, mine is planted in damp sun, where the daylight makes the flower heads sparkle, and it is doing just fine.
I purchased this variety last year for my test garden because I had never seen it in bloom and because the trade description suggested that it might be an ideal addition to my repertoire of elegant, tall perennials. I was not disappointed. The combination of good height, architectural presence, and intense color makes this versatile perennial a traffic stopper.