Plectranthus argentatus ‘Longwood Silver’
at Digging Dog
Plectranthus argentatus ‘Longwood Silver’
A remarkable foliage plant with a soft and alluring presence, ‘Longwood Silver’ is equally suited to the border or container. It quickly develops felted, silvery leaves that become greenish gray and more textured with age. Intriguing fuzzy stems seem to glow with a purplish hue that’s echoed in the terminal flower panicles.
Size: 2' high x 3' wide; hardy to zone 8.
Plectranthus argentatus ‘Longwood Silver’ (p-0607)
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Other selections in this genus
For our valued on-line customers, weíre offering an internet Fall Sale. Take a 15% discount when you order $100.00 worth of plants. This sale runs from September 26 to October 11.
Please note, your order must be shipped by October 13 and applies to in-stock items only. If you are not ready for a plant delivery, you can purchase a $100 Gift Certificate for 15% off, which means $100.00 worth of plants for only $85.00 (Itís a great time to squirrel away those early Christmas presentsódonít forget one for yourself...cash it in later this fall or even next spring!)
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Saturday Stroll & Plant Chat
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Fall Dog-Gone Super Plant Sale
Stroll Digging Dog Nursery's beautiful gardens and enjoy a 20% discount on a wide array of easy-to-grow garden plants, including many rare beauties and water-wise toughies.
October 10, 11, and 12. 10am-5pm.
Straight from the Border
Bring sparkling beauty to your late summer and early fall garden.
By the time August rolls around and the waning days of summer segue into fall, gardens can appear tired and somewhat lackluster. We may find ourselves simply losing interest in our verdant abodes.
Over the years, we’ve discovered a few simple techniques that allow any plantscape to resonate with late-season appeal. For starters, the addition of well-rotted compost and or mulch not only reduces watering requirements throughout the warmer months, but generally makes it easier for plants to stay perky and fresh looking during the dog days of summer. Sometime in early May, you may wish to cut back tall, late blooming perennials that have a tendency to flop or become messy by the time they finally flower. By doing so, they’ll maintain a tidier habit, and when coupled with frequent deadheading many blossoms will keep on coming ‘til the season’s end.
You could include a few specimen shrubs or trees. They serve as strong bones or placeholders, lending an overall pleasing appearance to the landscape, even though some of the perennials or grasses may be spent. White, clear pink or chartreuse-hued flowers tend to forge soothing counterpoints as they effortlessly meld autumn’s cozy parade of warm oranges, reds and yellows. Major stars of the late show, ornamental grasses become poetry in motion during gusty days, while their shimmering inflorescences are set aglow by afternoon sunlight. When designing your outdoor space, it’s important to choose plant’s not only for their flowers, but to consider their seed heads (often important food sources for birds), foliar intrigue, berries, bark and dynamic architecture as well.
We’ve included a sampling of our very favorite plants that promise to inspire your green thumb, heighten your senses and entice you back into the garden for a stellar last hurrah! There’s still enough time to select a couple of new botanical wonders and get a jump start on next spring before winter finally arrives.
Actaea simplex ‘Atropurpurea’
Actaea simplex ‘Atropurpurea’ & Helianthus ‘Sheila’s Sunshine’
Grown from seedlings carefully selected for dark, coppery purple foliage, the regal profile of ‘Atropurpurea’ shows its good breeding. A garden dweller with a staid bearing, its stately reddish purple stems soar above your head, displaying dense spires covered with round mahogany-hued buds and sweet starbursts of white.
Echo this Actaea’s somber tones by bringing it together with Angelica gigas, and let the lime green foliage of Physocarpus ‘Dart’s Gold’ brighten the mood.
Hardy to zone 4. (P-0049)
- Asarum splendens
Chinese Wild Ginger
“Splendid” seems like too modest a word to proclaim the elegance of this ginger’s foliage! glistening, broadly arrow-shaped, deep green leaves flaunt dramatic silver marbling and come spring, 2 in. wide dark purple blossoms with white throats. Situated among Podophyllum hexandrum, easy-to-grow Asarum splendens sculpts a show stealing, illustriously patterned ground cover in just a few years that appreciates warm, humid summers while resenting cool ones. Hardy to zone 6. (p-1247)
- Aster cordifolius ‘Avondale’
Blue wood Aster
Selected from a versatile Aster indigenous to our southeastern mountains, ‘Avondale’ greets fall with a jovial long lasting barrage of small, yellow-eyed pale lavender-blue daisies atop tidy slender green foliage. Acquiescent to varied light, it exhibits an upright open habit in sunny spots and becomes more relaxed and arching in darker recesses. Ignored by deer, but coveted by butterflies, floral arrangers, and gardeners, this floriferous wonder endures dry shade once established, favors well-drained soil and can be planted en masse along woodland fringes, meandering amid Geranium ‘White Ness’. Zone 3/4. (P-1746)
- Aster lateriflorus ‘White Lovely’
A preeminent star of the fall show, ‘White Lovely’ entertains petite, thin-petaled white daisies tinged lilac when mature and brightened by sunny-side-up yellow eyes. The copious, late summer flowers are borne along horizontally branched leafy sprays of arching and wide-angled, purple-streaked stems with small, slender dark green foliage that never tuckers out.
We like to plant Monarda ‘Violet Queen’ and Melianthus ‘Antonow’s Blue’ behind while headlining this elegant Aster right up front. Hardy to zone 4. (P-1366)
Aster ‘Jindai’ & Melainthus major
- Aster tataricus ‘Jindai’
Dwarf Tatarian Aster
The name may sound like one of the bad guys from Star Wars, but this unique Aster is definitely on our side with its upright bearing and lush textural appeal.
Not as towering as its moisture-loving Asian counterpart, ‘Jindai’ spawns huge serrated rough-to-the-touch leafage on stout shorter stalks and abundant branched sprays of late blooming violet flowers engraved by large saffron eyes. A stand-alone for the mixed border, its assertive look can be juxtaposed against finer textured plants like Spiraea ‘Ogon’ and Phlox ‘David’. Hardy to zone 3. (P-0632)
- Eupatorium maculatum ‘Riesenschirm’
Regarded as one of the top ten plants of the Dutch wave, favored by bees and butterflies and an AGM winner, this superb back-of-the-border beauty propels polished, tall dark purple stems—stiff, straight and staunch—skyward bound. Loosely arranged whorls of heavily textured deep green tapered leaves anchor fluffy 8 in. wide domed flower heads awash with reddish purple hues. Its lofty architecture maintains a dignified profile, even in winter, enhanced by warm browns and seed heads, which nourish finches and tits. Hardy to zone 4. (P-1754)
- Filipendula rubra ‘Venusta’
A statuesque beauty, ‘Venusta’ is distinguished by huge, fluffy cloudlike plumes painted with soft salmon pinks floating above a good-sized, leafy mass of upright stems and jagged, Maple-shaped foliage. Forging an impressive stand in a moist well drained setting, Meadow Sweet seldom needs staking, and makes an airy partner for Trollius ‘ Superbus’. Hardy to zone 4. (P-1024)
- Helenium ‘Zimbelstern’
One of the largest flowered Heleniums, ‘Zimbelstern’s undulating, brilliantly golden, mahogany-splashed petals converge at a russet eye. Before its enthusiastic bloom, strong stems sport unusual chartreuse buds that have a joy all their own. Hardy to zone 4. (p-0854)
- Helenium ‘Red Jewel’
Saturated with dusky red hues, uniquely shaded petals perform a lavish dance around prominent maroon and saffron hubs. Droves of closely set flowers, some marked by yellow tips, are esteemed for their long blooming period and the consistent color they maintain throughout the season, unlike many other Heleniums.
Destined to be a vivacious garden mainstay, this Bob Brown introduction grows as a bushy verdant clump, looks spectacular en masse and can escort perennials like Monarda ‘Jacob Cline’ and Salvia confertiflora for a galvanizing floral affair. Hardy to zone 4. (P-1701)
- Helianthus giganteus ‘Sheila’s Sunshine’
Giant Pale Yellow Sunflower
Late blooming pastel yellow flowers gaze down at onlookers from atop lofty, sturdy stems. Combine with Buddleja ‘Ellen’s Blue’, Calamagrostis ‘Karl Foerster’ and tall, late Asters in the rear of the border. Hardy to zone 6. (p-0461)
- Kniphofia ‘Yellow Cheer’
Bolstered by hefty, tall and straight asparagus-hued stalks, dense yellowish orange buds, infused with chartreuse, remind us of miniature Christmas trees. Radiant yellows, pumpkin colors and lime tinges meld an unparalleled luminosity as the gorgeous torches stand sentinel, their plump rounded bases tapering to blunt tips well above a bright green, upright clump of strapping, deeply furrowed lax leaves.
A robust specimen for the fall garden, ‘Yellow Cheer’s late season effervescence steals the show, especially when staged against a dark green foil. Hardy to zone 8. (p-1458)
Leonotis menthifolia ‘Savannah Sunset’
Leonotis menthifolia ‘Savannah Sunset’
Conjuring images of romping safari lions, wondrous dense whorls of furry bright orange tubular flowers ascend straight lofty stalks in spaced intervals. New growth emerges from the blossom’s center, crafting an unusual tiered effect, while freely branching square hairy stems sprout neatly paired triangular green leaves that are narrow and toothed.
Majestic as a container specimen or a mixed border focal point, this easy-to-grow South African mint family member favors a sunny well-drained spot with average moisture and a hard cut back after frosty winters. Hardy to zone 8. (P-1657)
- Origanum ‘Bristol Cross’
Assuming an air of refinement, the very slender blooms feature small, deep rose and chartreuse bracts that resemble decorative braids. Tipped with tiny purple flowers, the clustered bracts are held at nearly right angles to upright and reddish leafy stems. Grounded by medium green foliage, this long lasting, delicate floral display casts earthy yet saturated hues in the border or an arrangement. Shown in the middle with Hypericum androsaemum to the left. Hardy to zone 6. (p-1277)
Hypericum androsaseum to the left with Euphorbia ‘Excalibur’ behind & Persicaria ‘Summer Dance’ back right;
low growing Origanum ‘Bristol Cross’ (middle, to the right of the Hypericum)
- Persicaria amplexicaulis ‘Summer Dance’
With foliage that’s close to lime-green, and spiky floral tails that approach the scarlet spectrum of rosy pink, this slow spreading perennial is sure to please.
We brought ‘Summer Dance’ home from Piet Oudolf’s Dutch nursery and have come to appreciate its brighter, less rambunctious nature. Swaying to a late summer breeze, our stand lives up to its name while cheerfully commingling amid Anemone ‘Andrea Atkinson’ in the border.
Zone 5/6. (P-1312)
Rudbeckia ’Praire Glow’, Helenium ‘Zimbelstern’ & Helenium ‘Red Jewel’ on the right
- Rudbeckia triloba ‘Prairie Glow’
Spangled with burgundy, bronze and reddish orange shades, irresistible legions of ebullient long blooming daisies parade dark chocolate centers and bicolor gold-tipped petals. At the base, large trilobed verdant leaves form a handsome bushy mass that gives way to upper, narrower leaves and openly branched, erect purple flowering stems.
A denizen of the Great Plains, this summertime showstopper is not as long-lived as other Rudbeckias; it eventually wears out, but easily reseeds. Hardy to zone 3. (P-1713)
- Sanguisorba officinalis ‘Red Thunder’
Derived from a Korean collection of Sanguisorba officinalis, this high-fashion Sanguisorba was selected by Dutch plantsman Piet Oudolf for its deep ruby-red bobbles, perched on tall stiffer stems. Whether in the border or a meadow planting, a bouquet or frost-covered in the garden’s winter light, their distinctive silhouette inspires as much drama as a gathering thunderhead. A bluish green bed of pinnate foliage with toothed leaflets launches the strong floral display that can be superimposed against lofty silvery plumed Miscanthus, whorled Veronicastrum blooms and Helianthus ‘Capenoch Star’. Hardy to zone 4. (P-1542)
- Sedum telephium ‘Red Cauli’
A vibrant carousel of color and a neat compact visage earned this popular Sedum the RHS Garden Merit award in 2006 and a place in our border. Flashy cardinal-hued arching stems and notched blue-green succulent leaves with purple tinges elevate pale rosy buds and bright pink clustered flowers, which age to a dark ruby red.
Let ‘Red Cauli’ festoon a patio container or a pathway’s edge, accompanying other late blooming companions such as Salvia reptans West Texas Form and Calamagrostis foliosa. Zone 3/4. (P-1716)
Salvia ‘Limelight’ & Sedum ‘Red Cauli’
- Salvia mexicana ‘Limelight’
Whorls of densely packed, chartreuse terminal buds on strong upright stems provide exciting contrast to the lush green color of ‘Limelight’s foliage. In flower, this cultivar is sure to take center stage as deep bluish purple blooms peek out from the vibrant yellow-green calyxes. Cut back each season to encourage new growth at the base and to maintain a pleasing shape. Hardy to zone 8. (p-0608)
- Tricyrtis lasiocarpa
Amethyst Toad Lily
A favored standout among Tricyrtis, this exceptional species sprouts an attractive tightset clump of sturdy erect arching stems garbed with glistening green and purple freckled alternating leaves. Amethyst and blue petal tips embellish white upward facing orchid-style blooms that populate large well-branched terminal sprays. Hailing from Taiwan, where it has been observed growing in nearly full sun, Amethyst Toad Lily’s lovely long blooming flowers can model their ornate features in a brighter garden bed. Hardy to zone 7. (P-0271)
- Andropogon gerardii
Historically renowned as the sod our ancestors broke their backs busting, Big Bluestem is the most widespread of all the prairie grasses. Its regal and wild color show makes it a must in our garden. Growing to great size, the stand’s lush, blue-blushed summer greenery becomes a burgundy and copper glory at first frost. Soaring three-pronged red seed heads beg its other common name, Turkeyfoot.
Reliable, heat tolerant and sturdy, Andropogon gerardii thrives in poorly drained clay to dry sandy soils, and easily transitions the outskirts of your garden into the wild meadow beyond. Hardy to zone 4. (g-0448)
- Eragrostis chloromelas
Witness the ethereal haze of sheer amber-colored panicles floating on lax 3 ft. stalks over long fine cut powdery blue blades and you’ll see why we love this gorgeous South African denizen. The flowing warm season mound spreads slowly over time, while the gauzy inflorescences tantalize birds, butterflies and the rest of us through early winter.
Appreciative of fast draining locations, Blue Lovegrass makes a sterling drought tolerant specimen or mass planting. Flank with Pennisetum spathiolatum and tall Molinias, and intersperse Sanguisorba ’Chocolate Tip’ or Aster ’Blue Danube’ for a spectacular painterly effect.
Zone 6/7. (G-0540)
- Molinia caerulea ssp. arundinacea ‘Bergfreund’
Invite this “friend of the mountain” into your garden bed and it will quickly become your friend as well. Dynamic yet not too imposing, a gauzy array of gently pendulous, rich-colored reddish purple panicles mingle on dark green upright stems. Handsome foliage forms a low green stage that radiates yellow hues in autumn. Studded with ricelike beads transmuting warm chestnut hues when mature, the airy plumes should be headlined right up front where they become a mysterious veil that you can peer through. Hardy to zone 4. (G-0489)
- Pennisetum spathiolatum
Slender Veldt Grass
A denizen of South Africa, this drought tolerant evergreen grass has low growing, narrow dark green blades that provide a verdant contrast to its tawny colored tapers. The dense, abundantly produced inflorescences hover on jointed nearly invisible stems, some 2 to 3 ft. tall, while fashioning a delightful see-through veil.
Especially mesmerizing when grouped in a dry creek bed, a meadow or a water wise garden, the Slender Veldt Grass asks only for a well drained abode. Zone 6/7. (G-0511)
- Cornus capitata
An elegant, large evergreen shrub or small tree, this slow growing Dogwood is a perfect anchor for the shrubby border. Handsome, curved leathery leaves with light green veins provide a pleasing texture and turn bronze in the winter months. Buttonlike flower heads surrounded by creamy yellow bracts precede the long lasting, prominent, pinkish red strawberry-shaped fruit that appears in November and can be brought inside as a colorful complement to holiday greenery. Hardy to zone 8. (S-0364)
Persicaria ‘Summer Dance’ & Cotinus ‘Grace’
- Cotinus ‘Grace’
An arresting beacon as the sun casts a ruby glow through its purple-black leaves, ‘Grace’ inherits her elegance from Cotinus coggygria ‘Velvet Cloak’ and Cotinus obovatus. The sprays of tiny deep pink flowers throw a smoky, wine-colored fog over its robust form, and a close glance reveals bright yellow at the center of each bloom. Lovely in contrast with the silver foliage of Teucrium fruticans (Select Form), ‘Grace’ conveys a stately presence matched by few other plants. Hardy to zone 5. (S-0394)
Hydrangea quercifolia ‘Ruby Slippers’
Hydrangea quercifolia ‘Ruby Slippers’
Easily slipped into a diminutive spot, this compelling smaller-statured beauty sprung from a 1998 U.S. National Arboretum cross between ‘Snow Queen’ and ‘Pee Wee’. Exceptional 9 in. upright flowers, which open white but quickly transmute pale pink and eventually deeper rose hues, dress up a more petite, compact rounded carriage. Broad, lobed deciduous leaves are dark green in summer and mahogany tinted come autumn. A peerless companion for fine textured plants such as Spiraea ‘Ogon’ or Sarcococca hookeriana var. humilis, ‘Ruby Slippers’s lovely low profile can be ushered to the foreground, planted en masse or utilized as a hedge. Hardy to zone 5. (S-0766)
- Hydrangea paniculata ‘Unique’
Left to its own designs, this vigorous Hydrangea has a natural upright and arching form, but it also responds well to pruning, making ‘Unique’ an effective choice where space is scarce.
The immense flower heads are spectacular and abundant, and true to name are unique in shape, being quite broad at the base and bluntly rounded at the tip. They begin the season a creamy white and gradually darken to a buff pink.
Hardy to zone 3. (s-0348)
Hydrangea paniculata ‘Unique’
Trees & Vines
- Clematis terniflora
Sweet Autumn Clematis
This spectacular New Zealand native is covered with small white flowers borne on long, arching panicles. The pink anthers, silky seed heads, and dark glossy leaves combine with the Hawthorn-like fragrance of the flowers to create a sensuous, alluring effect. We trained our Sweet Autumn Clematis to grow horizontally against a wall, so that the evergreen foliage contrasts with the hanging flower panicles. Hardy to zone 6. (T-0108)
- Parrotia persica
F. W. Parrot, who made the first ascent of Mt. Ararat in 1829, lends his name to this low branched, round headed, deciduous Persian native with tremendous landscape value. In spring, the silver, green and cream-colored smooth bark is complemented by lustrous green foliage and in autumn it’s highlighted by exquisite gold, rosy pink and crimson tones. Later, showy red stamens and wooly brown bracts create a reddish haze around bare limbs, making a virtual carousel of color and texture.
Pest free Persian Ironwood prefers well drained soil and detests both overly wet or dry conditions. Grows moderately. 10’ in 6–8 yrs. Hardy to zone 5. (T-0016)
Current Staff’s Favorite Plant
Everyone at DD loves Tricyrtis ‘Empress’ (P-1469) for its ornate late season flower, which never fails to jazz up a shady nook!
Renowned for its extra large and wider open flowers, this exquisite, newly introduced Toad Lily is a formosana hybrid. Ornate, spidery spaced petals are inscribed by occasional darkened tips and irregular velvet-rich deep purple spots, stipples and mottling on a creamy white background. An enticing fall beacon amongst the shadows, ‘Empress’s showy terminal blooms are supported by an upright robust gathering of lustrous, semi-clasping dark green foliage that stays dapper all season.
Blooms August – September.
Size: 2-¼' high x 18" wide; hardy to zone 5.
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