A Hazy Slope of Heather (Calluna vulgaris ‘Silver Knight’) in the Palest Shade of Lavender
While much of my garden blooms in brilliant, sunny shades of gold, yellow and orange throughout the summer, there are many quiet, soothing spaces here as well. Along the exposed ledges —where water drains freely and sun heats thin pockets of soil— a wide swath of Heath (Erica carnea) and Heather (Calluna vulgaris) sprawls along the stoney slope. Throughout the wet and chilly month of April, Spring Heath (Erica carnea) blossoms here in a tender shade of pink (plant profile post/photos here and more photos here). Later, in mid-summer, Heather (Calluna vulgaris) —Heath’s natural companion— colors the outcrop in a hazy shade of lavender.
Heath and Heather make wonderful, low, ground-covering plants —6″ -24″ high— for dry, sunny slopes and rock gardens. I grow several cultivars of Erica and Calluna here in my zone 4/5 garden; using them in combination with blue-green junipers, sedum and other plants to paint a colorful carpet along the ledges. Native to Europe and Asia, Calluna vulgaris prefers acidic, sandy soil with excellent drainage and, unlike many garden plants, this tough little shrub actually prefers low soil fertility. Although cold-hardy to zone 4, Heather dislikes heavy soil and wet, humid conditions; making this plant a poor choice for gardeners with shady, wet sites and for those south of zone 6/7. The long-lasting, slender flowers are beautiful planted en masse in the garden or gathered up in fresh or dried arrangements. With so many cultivars to choose from, I am tempted to keep adding to my ledgy tapestry. Calluna vulgaris ‘Silver Knight’ is one of the finest, and my favorite of the pale-lavender heathers. Blooming long and late in the season —just coming into flower here now, in mid July— ‘Silver Knight’ continues to add beauty to the garden, even in early winter (click here to view photos of various heath and heather wearing a coat of ice.)
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